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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260209T160000
DTEND;TZID=Europe/Berlin:20260209T160000
DTSTAMP:20260503T184058
CREATED:20251223T121749Z
LAST-MODIFIED:20260129T191257Z
UID:10000125-1770652800-1770652800@www.trr352.de
SUMMARY:A probabilistic approach to BEC
DESCRIPTION:A gas of interacting Bosons can be represented using an ensemble of stochastic diffusions – a Brownian loop soup. In this talk\, we review the construction of this Feynman representation\, its representation of Free Energy and the 1-PRDM. We also introduce some results from the literature in the dilute and other regimes and state some conjectures.
URL:http://www.trr352.de/event/a-probabilistic-approach-to-bec/
LOCATION:Room 5612.EG.019 (CIT Sitzungsraum 2)\, Boltzmannstr. 3\, Garching b. München\, 85748\, Germany
CATEGORIES:Junior Coffee Breaks
ORGANIZER;CN="Quirin Vogel":MAILTO:Quirin.Vogel@aau.at
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260122T190000
DTEND;TZID=Europe/Berlin:20260122T190000
DTSTAMP:20260503T184058
CREATED:20260122T202110Z
LAST-MODIFIED:20260122T202110Z
UID:10000132-1769108400-1769108400@www.trr352.de
SUMMARY:Semi-classical limit of a trapped dilute Fermi gas
DESCRIPTION:
URL:http://www.trr352.de/event/semi-classical-limit-of-a-trapped-dilute-fermi-gas/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260122T180000
DTEND;TZID=Europe/Berlin:20260122T180000
DTSTAMP:20260503T184058
CREATED:20260122T202030Z
LAST-MODIFIED:20260122T202030Z
UID:10000131-1769104800-1769104800@www.trr352.de
SUMMARY:A Pohozaev identity for the Spectral Fractional Laplacian
DESCRIPTION:
URL:http://www.trr352.de/event/a-pohozaev-identity-for-the-spectral-fractional-laplacian/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260120T150000
DTEND;TZID=Europe/Berlin:20260120T150000
DTSTAMP:20260503T184058
CREATED:20260117T130818Z
LAST-MODIFIED:20260117T131351Z
UID:10000127-1768921200-1768921200@www.trr352.de
SUMMARY:On the asymptotic behavior at the kinetic time of a weakly interacting Fermi gas
DESCRIPTION:Describing the long-time dynamical behaviour of quantum systems is a long-standing open problem. \nWhen the coupling constant  of the interaction is small\, the dynamics of the system up to kinetic time  is conjectured to be effectively governed by the Boltzmann-Nordheim kinetic equation. \nIn this talk\, I will present a result on the two-point time correlation function of a system of lattice fermions at thermal equilibrium\, and I will explain how to approach the problem using a perturbation expansion and representing the appearing terms by Feynman diagrams. \nThis is joint work with Phan Thành Nam\, Herbert Spohn\, and Minh-Binh Tran.
URL:http://www.trr352.de/event/on-the-asymptotic-behavior-at-the-kinetic-time-of-a-weakly-interacting-fermi-gas/
LOCATION:Room B 349\, Theresienstr. 39\, Munich\, 80333\, Germany
CATEGORIES:Junior Coffee Breaks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260114T180000
DTEND;TZID=Europe/Berlin:20260114T180000
DTSTAMP:20260503T184058
CREATED:20260111T195018Z
LAST-MODIFIED:20260111T195018Z
UID:10000126-1768413600-1768413600@www.trr352.de
SUMMARY:Bound states of the Pauli operator in two dimensions - weak coupling asymptotics and CLR-type inequalities
DESCRIPTION:
URL:http://www.trr352.de/event/bound-states-of-the-pauli-operator-in-two-dimensions-weak-coupling-asymptotics-and-clr-type-inequalities/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20260108T160000
DTEND;TZID=Europe/Berlin:20260108T160000
DTSTAMP:20260503T184058
CREATED:20260122T201802Z
LAST-MODIFIED:20260122T201808Z
UID:10000130-1767888000-1767888000@www.trr352.de
SUMMARY:Scattering Quantum Walks on Graphs
DESCRIPTION:We consider a class of Unitary Quantum Walks on arbitrary graphs\, parameterized by a family of scattering matrices. \nAfter explaining that these Scattering Quantum Walks encompass several known Quantum Walks\, we further introduce two classes of Scattering Open Quantum Walks on arbitrary graphs based on that construction\, whose asymptotic states we discuss.
URL:http://www.trr352.de/event/scattering-quantum-walks-on-graphs/
LOCATION:Room 5610.EG.011 (CIT Sitzungsraum 1)\, Boltzmannstr. 3\, Garching b. München\, 85748\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251215T160000
DTEND;TZID=Europe/Berlin:20251215T160000
DTSTAMP:20260503T184058
CREATED:20260117T132056Z
LAST-MODIFIED:20260117T132056Z
UID:10000128-1765814400-1765814400@www.trr352.de
SUMMARY:Validity of Kubo formula for 1d and quasi-1d lattice fermionic systems
DESCRIPTION:We study the dynamical density and current responses of a class of non-interacting\, one-dimensional gapless lattice Fermi systems subjected to density-type perturbations slowly varying in space and time\, in the infinite-volume and zero-temperature limit. In addition\, we analyse the edge density and current responses for quantum Hall lattice systems defined on a cylindrical geometry. \nWe establish the validity of linear response for these observables\, thereby providing a justification of Kubo’s formula. The latter is computed explicitly in terms of the spectral properties at the Fermi points and the profile of the perturbation. \nThe proof of linear response validity on the relevant time scales is based on a detailed analysis of the imaginary-time Duhamel expansion. A crucial ingredient is a cancellation mechanism in the scaling limit of higher-order correlation functions that describe the nonlinear part of the response. \nJoint work with Marcello Porta.
URL:http://www.trr352.de/event/validity-of-kubo-formula-for-1d-and-quasi-1d-lattice-fermionic-systems/
LOCATION:Seminar Room\, 4th floor\, Auf der Morgenstelle 10\, Tübingen\, 72076\, Germany
CATEGORIES:Junior Coffee Breaks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251212T143000
DTEND;TZID=Europe/Berlin:20251212T180000
DTSTAMP:20260503T184058
CREATED:20251202T201643Z
LAST-MODIFIED:20251202T201643Z
UID:10000123-1765549800-1765562400@www.trr352.de
SUMMARY:Probability Colloquium Augsburg-Munich
DESCRIPTION:Schedule:\n\n14:30    Welcome\n15:00    Talk by   Nicos Georgiou (Sussex)\n16:00    Coffee break\n16:30    Talk by  Christian Kühn (TU Munich)\n18:00    Option for common dinner\n\n  \n\nTitles and abstracts:\nNicos Georgiou: Mean-field limit and parameter estimation for contagion dynamics on higher-order structures \nClassical models of contagion epidemics have graph based representations where the nodes represent the population and infections occur from an infected individual to a susceptible individual via a network link between them. At the same time\, healing mechanisms try to fight the epidemic at node level. The simple descriptions of these representations also underscore their limitations\, since the propagation of contagions in complex systems often involves repeated or simultaneous stimuli that individuals receive from their social contacts (such as their work or household). One may mechanistically encode these non-linear effects into contagion models by considering interactions that go beyond simple pairwise connections\, by using hypergraphs rather than graphs. In this talk we will see the role higher-order interactions can play in the behaviour of the model when a rigorous mean-field can be obtained. Furthermore\, we will discuss some inference techniques for the parameters of the epidemic (rates of infection) when only partial information on the type of infection is available and with only a single realisation of the epidemic curve as a datum. \n  \nChristian Kühn: Epidemic Dynamics: From Simple Models to Complex Systems \nIn this talk\, I am going to give an overview of various techniques to analyze contact processes and their nonlinear dynamics with a focus on moment-based methods. The main results will be (a) the existence of periodic motion in systems with waning immunity\, (b) warning signs for outbreaks in adaptive epidemic models with social distancing and quarantining\, (c) the influence of transport in multiplex networks\, and (d) the influence of multiscale group interactions to prevent epidemics. We shall also see how to locally justify moment closure expansions of the dynamics.
URL:http://www.trr352.de/event/probability-colloquium-augsburg-munich-2/
LOCATION:University of Augsburg\, Room 2004 (L1)\, Universitätsstraße 14\, Augsburg\, 86159
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251210T170000
DTEND;TZID=Europe/Berlin:20251210T170000
DTSTAMP:20260503T184058
CREATED:20260117T132305Z
LAST-MODIFIED:20260117T132305Z
UID:10000129-1765386000-1765386000@www.trr352.de
SUMMARY:The Widom-Sobolev formula for the free Dirac operator
DESCRIPTION:With the proof of Widom’s conjecture giving new insights on the entanglement properties of the non-relativistic free Fermi gas\, it is a natural question whether this situation extends to the relativistic case\, where the single-particle Hamiltonian is given by the free Dirac operator. \nIn this talk I give a brief introduction to both the Widom-Sobolev formula as well as the free Dirac operator\, and give an answer to the question above. I also talk about the strategy of the proof of this result\, in particular I show how it can be reduced to an application of another result from my PhD thesis\, a Widom-Sobolev formula for more general matrix-valued symbols. \nThe presented results were obtained in collaboration with Peter Müller.
URL:http://www.trr352.de/event/the-widom-sobolev-formula-for-the-free-dirac-operator/
LOCATION:Room B 349\, Theresienstr. 39\, Munich\, 80333\, Germany
CATEGORIES:Junior Coffee Breaks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251208T000000
DTEND;TZID=Europe/Berlin:20251212T235959
DTSTAMP:20260503T184058
CREATED:20250904T100216Z
LAST-MODIFIED:20250904T103701Z
UID:10000116-1765152000-1765583999@www.trr352.de
SUMMARY:Emergent phenomena in many-body quantum systems
DESCRIPTION:The microscopic laws of quantum mechanics give rise to some of the most fascinating macroscopic phenomena in physics\, such as superfluidity and superconductivity. The theoretical description of such phenomena is intimately linked with beautiful mathematics in fields like functional analysis\, partial differential equations\, or probability. This conference brings together internationally recognised experts in mathematical physics to report on recent developments and exchange new ideas. The meeting will provide opportunities for early-career researchers to present their work and initiate new collaborations\, thus ensuring the future dynamism of the field.
URL:http://www.trr352.de/event/emergent-phenomena-in-many-body-quantum-systems/
LOCATION:Centre International de Rencontres Mathématiques (CIRM)\, 163 Av. de Luminy\, Marseille\, 13009\, France
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251124T000000
DTEND;TZID=Europe/Berlin:20251128T235959
DTSTAMP:20260503T184058
CREATED:20250404T153159Z
LAST-MODIFIED:20251223T120302Z
UID:10000005-1763942400-1764374399@www.trr352.de
SUMMARY:Quantum many-body systems and Bose-Einstein condensation: A Mathematical Physics Perspective
DESCRIPTION:
URL:http://www.trr352.de/event/quantum-many-body-systems-and-bose-einstein-condensation-a-mathematical-physics-perspective/
LOCATION:Erwin Schrödinger International Institute for Mathematics and Physics (ESI)\, Boltzmanngasse 9A\, Vienna\, 1090\, Austria
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251119T161500
DTEND;TZID=Europe/Berlin:20251119T161500
DTSTAMP:20260503T184058
CREATED:20251202T201902Z
LAST-MODIFIED:20251202T201902Z
UID:10000124-1763568900-1763568900@www.trr352.de
SUMMARY:(Semi) Relativistic (Semi) Classical PDE (around) the Self-Consistent Pauli Equation
DESCRIPTION:We present the relativistic quantum physics model hierarchy from Dirac-Maxwell to Vlasov/Euler-Poisson that models fast moving charges and their self-consistent electro-magnetic field. Our main interest is (asymptotic) analysis of these nonlinear time-dependent PDE\, with focus on the Pauli-Poisswell/Darwin system which is the consistent model at first/second order in 1/c (c = speed of light) that keeps both relativistic effects “spin” and “magnetism”. Emphasis is on the (semi)classicial limit for vanishing Planck constant. We use both WKB methods and Wigner functions where we extend the 1993 results of P. L. Lions & Paul and Markowich & Mauser on the limit from Schrödinger-Poisson to Vlasov-Poisson\, with similar subtilities of pure quantum states vs mixed states. In the hope of taming the mathematical complications stemming from the magnetic field\, we are interested also in developing “quantum/semiclassical velocity averaging lemmata” building on the 1988 ideas of Golse\, Perthame\, Sentis and P.L.Lions. This talk aims to explain the models\, the new results & ideas of proofs/techniques\, as worked out in joint works mainly with Jakob Möller (X) and also Pierre Germain (ICL)\, Changhe Yang (Caltech)\, François Golse (X).
URL:http://www.trr352.de/event/semi-relativistic-semi-classical-pde-around-the-self-consistent-pauli-equation/
LOCATION:Room 5610.EG.011 (CIT Sitzungsraum 1)\, Boltzmannstr. 3\, Garching b. München\, 85748\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251117T000000
DTEND;TZID=Europe/Berlin:20251121T235959
DTSTAMP:20260503T184058
CREATED:20250707T135912Z
LAST-MODIFIED:20260126T211517Z
UID:10000114-1763337600-1763769599@www.trr352.de
SUMMARY:Junior Meeting
DESCRIPTION:November 17-21\, 2025 at Haus Chiemgau\, Teisendorf\n \nThe meeting will begin on Monday at 3 pm and conclude on Friday after lunch. \nSpeakers: \nLennart Becker (UT)\nYoon Jun Chan (UA)\nEddy de Leon (TUM)\nJorge Acuña Flores (UT)\nPaul Pfeiffer (LMU)\nSebstian Stengele (TUM)\nCornelia Vogel (LMU) \nProgram: \nSchedule Junior Meeting Nov. 25\nAbstracts Junior Meeting Nov. 25\nNovember 20: Full-Day Theatre Skills Workshop Junior Meeting Nov. 25\n\nOrganizers: \nFlorian Haberberger (LMU Munich)\nEmilio Onorati (TUM)\nBarbara Roos (Tübingen University)\nCarla Rubiliani (Tübingen University)\nSeverin Schraven (TUM)\nFrançois Visconti (LMU Munich) \n\nVenue: \nHaus Chiemgau\nDechantshof 3\n83317 Teisendorf \nweb: www.haus-chiemgau.de\nphone: +49 (0) 8666 98590 \nHow to get there: \nYou can reach Teisendorf by train.\nHaus Chiemgau is only a few minutes’ walk from the station.
URL:http://www.trr352.de/event/junior-meeting-3/
LOCATION:Haus Chiemgau\, Dechantshof 3\, Teisendorf\, 83317\, Germany
CATEGORIES:Retreats
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251105T180000
DTEND;TZID=Europe/Berlin:20251105T180000
DTSTAMP:20260503T184058
CREATED:20251202T201456Z
LAST-MODIFIED:20251202T201456Z
UID:10000122-1762365600-1762365600@www.trr352.de
SUMMARY:Unified approach to Strichartz estimates for orthonormal functions
DESCRIPTION:
URL:http://www.trr352.de/event/unified-approach-to-strichartz-estimates-for-orthonormal-functions/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251028T161500
DTEND;TZID=Europe/Berlin:20251028T161500
DTSTAMP:20260503T184058
CREATED:20251029T200625Z
LAST-MODIFIED:20251029T200625Z
UID:10000121-1761668100-1761668100@www.trr352.de
SUMMARY:A multiplicative ergodic theorem for disordered quantum processes
DESCRIPTION:Repeated compositions of quantum channels arise naturally in many places across quantum: they arise\, for example\, in the transfer operator approach to quantum spin chains\, and also in the repeated interactions description of open quantum dynamics. Assuming the system of interest is subject to some amount of disorder\, it is therefore natural that one consider repeated compositions of random quantum channels\, i.e.\, quantum channels sampled from a stochastic process. Under a stationarity assumption\, such compositions fit well into the mathematical framework of Oseledets’s classical Multiplicative Ergodic Theorem (MET); in this talk\, I shall discuss my recent work refining the MET for repeated compositions of random bistochastic quantum channels\, and\, time-permitting\, I shall describe applications of this work to understanding entanglement breaking properties of such compositions.
URL:http://www.trr352.de/event/a-multiplicative-ergodic-theorem-for-disordered-quantum-processes/
LOCATION:Room 5608.03.011 (Seminarraum (M1/M7))\, Boltzmannstr. 3\, Garching b. München\, 85748\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251027T150000
DTEND;TZID=Europe/Berlin:20251027T150000
DTSTAMP:20260503T184058
CREATED:20251029T200507Z
LAST-MODIFIED:20251029T200507Z
UID:10000120-1761577200-1761577200@www.trr352.de
SUMMARY:NESS for KPZ
DESCRIPTION:
URL:http://www.trr352.de/event/ness-for-kpz/
LOCATION:Room B 349\, Theresienstr. 39\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251027T150000
DTEND;TZID=Europe/Berlin:20251027T150000
DTSTAMP:20260503T184058
CREATED:20251029T200343Z
LAST-MODIFIED:20251029T200343Z
UID:10000119-1761577200-1761577200@www.trr352.de
SUMMARY:Min-Max Trees
DESCRIPTION:
URL:http://www.trr352.de/event/min-max-trees/
LOCATION:Room B 349\, Theresienstr. 39\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251005T000000
DTEND;TZID=Europe/Berlin:20251010T235959
DTSTAMP:20260503T184058
CREATED:20250404T183301Z
LAST-MODIFIED:20250904T100451Z
UID:10000008-1759622400-1760140799@www.trr352.de
SUMMARY:Arbeitsgemeinschaft: Analysis of Many-body Quantum Systems
DESCRIPTION:
URL:http://www.trr352.de/event/arbeitsgemeinschaft-analysis-of-many-body-quantum-systems/
LOCATION:Mathematisches Forschungsinstitut Oberwolfach\, Schwarzwaldstraße 9-11\, Oberwolfach\, 77709\, Germany
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20251001T000000
DTEND;TZID=Europe/Berlin:20251003T235959
DTSTAMP:20260503T184058
CREATED:20260126T200923Z
LAST-MODIFIED:20260126T200923Z
UID:10000133-1759276800-1759535999@www.trr352.de
SUMMARY:Mind the Gap: A Workshop Advancing Women in Quantum Math
DESCRIPTION:
URL:http://www.trr352.de/event/mind-the-gap-a-workshop-advancing-women-in-quantum-math/
LOCATION:Georg-von-Vollmar-Akademie\, Am Aspensteinbichl 9\, Kochel am See\, 82431\, Germany
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250928T000000
DTEND;TZID=Europe/Berlin:20251001T235959
DTSTAMP:20260503T184058
CREATED:20251017T071250Z
LAST-MODIFIED:20260129T194947Z
UID:10000117-1759017600-1759363199@www.trr352.de
SUMMARY:Annual Retreat 25
DESCRIPTION:The CRC’s Annual Retreat took place from September 28 to October 1\, 2025\, at the Georg-von-Vollmar-Akademie in Kochel am See. The retreat was fully dedicated to preparing the application for the next funding period. Every project that will be continued or newly participating was introduced by a project leader. \nOn Wednesday morning\, the Best Paper Awards were announced. \n  \nThe Best PhD Research Paper award went to Carla Rubiliani for her work: \n(joint with M. Lemm\, J. Zhang)\nOn the microscopic propagation speed of long-range quantum many-body systems\, Preprint 2023 (arXiv:2310.14896) \n(joint with M. Lemm\, J. Zhang)\nOn the quantum dynamics of long-ranged Bose-Hubbard Hamiltonians\, Preprint 2025 (arXiv:2505.01786)* \n  \nThe Best Postdoc Research Paper award went to Emanuela L. Giacomelli for the paper: \n(joint with C. Hainzl\, P. T. Nam\, R. Seiringer)\nThe Huang-Yang conjecture for the low-density Fermi gas\, Preprint 2025 (arXiv:2505.22340)* \n  \nThe retreat provided an excellent opportunity for scientific exchange and discussion\, helping to shape the CRC’s plans for the next funding period. \nSchedule TRR352 Retreat 2025
URL:http://www.trr352.de/event/annual-retreat-25/
LOCATION:Georg-von-Vollmar-Akademie\, Am Aspensteinbichl 9\, Kochel am See\, 82431\, Germany
CATEGORIES:Retreats
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250901T000000
DTEND;TZID=Europe/Berlin:20250905T235959
DTSTAMP:20260503T184058
CREATED:20250404T183402Z
LAST-MODIFIED:20250904T101218Z
UID:10000009-1756684800-1757116799@www.trr352.de
SUMMARY:QMATH16: Mathematical Results in Quantum Theory
DESCRIPTION:
URL:http://www.trr352.de/event/qmath16-mathematical-results-in-quantum-theory/
LOCATION:School of Computation\, Information and Technology (CIT)\, Boltzmannstraße 3\, Garching bei München\, 85748\, Germany
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250716T183000
DTEND;TZID=Europe/Berlin:20250716T183000
DTSTAMP:20260503T184058
CREATED:20250707T132300Z
LAST-MODIFIED:20250707T132300Z
UID:10000101-1752690600-1752690600@www.trr352.de
SUMMARY:How Does a Quantum Computer Work?
DESCRIPTION:Quantum mechanics\, now about a century old\, is a very successful physical theory of matter on a small scale. From its first description until today\, it has surprised scientists and laypersons alike by the strange behaviour it attributes to particles\, atoms\, and molecules. This behaviour can be characterized by the keywords Uncertainty\, Superposition\, and Entanglement. \nIt took about sixty years before it was realized that these three characteristics do not just express a certain vagueness and strangeness of matter on a small scale but can actually be used to our advantage. In 1994 Peter Shor made this idea concrete by devising an algorithm that would enable large arrays of quantum systems to perform specific calculations (factoring large integers)\, which are impossible to do in practice on any classical device. With this algorithm\, present-day cryptographic schemes can be broken\, provided such “quantum computers” can be made to work. \nStarting from a discussion of the “two-slit experiment”\, we sketch the working of Shor’s algorithm and discuss the possibilities of future quantum computers.
URL:http://www.trr352.de/event/how-does-a-quantum-computer-work/
LOCATION:Room 0503.EG.360 (Theodor-Fischer-Hörsaal)\, Arcisstr. 21\, München\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250715T163000
DTEND;TZID=Europe/Berlin:20250715T163000
DTSTAMP:20260503T184058
CREATED:20250707T132940Z
LAST-MODIFIED:20250904T091423Z
UID:10000104-1752597000-1752597000@www.trr352.de
SUMMARY:Optimal criteria for magnetic fields that bind electrons
DESCRIPTION:This talk will provide a basic introduction to the three dimensional Dirac equation that describes an electron interacting with a magnetic field. Over the years a lot of work has gone into constructing zero energy solutions\, also known as zero modes\, for said equation.\nIn this talk I will explain the importance of zero modes e.g. I will show how they relate to the stability of the hydrogen atom. After presenting explicit examples\, I will state necessary conditions for the magnetic field so that zero modes exist. Here\, of particular interest is a sharp inequality that is optimized by a magnetic field whose field lines are interlinking circles. This inequality relates to sharp inequalities for spinors of which some more examples will be given.
URL:http://www.trr352.de/event/optimal-criteria-for-magnetic-fields-that-bind-electrons/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250710T121500
DTEND;TZID=Europe/Berlin:20250710T121500
DTSTAMP:20260503T184058
CREATED:20250701T142021Z
LAST-MODIFIED:20250701T142021Z
UID:10000032-1752149700-1752149700@www.trr352.de
SUMMARY:Filtered finite difference methods for semiclassical nonlinear Schrödinger equations
DESCRIPTION:
URL:http://www.trr352.de/event/filtered-finite-difference-methods-for-semiclassical-nonlinear-schrodinger-equations/
LOCATION:Room 03.06.011\, Boltzmannstr. 3\, Garching Forschungszentrum\, 85748\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Prof. Dr. Christian Lubich":MAILTO:lubich@na.uni-tuebingen.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250613T160000
DTEND;TZID=Europe/Berlin:20250613T160000
DTSTAMP:20260503T184058
CREATED:20250706T224419Z
LAST-MODIFIED:20250829T134820Z
UID:10000066-1749830400-1749830400@www.trr352.de
SUMMARY:Magic moire materials with a twist
DESCRIPTION:I will review the mathematical analysis behind two classes of new exciting materials: Twisted bilayer graphene (TBG) and twisted semiconductors (TMDs) with an emphasis on their mathematical properties and differences. If time permits I will discuss results on these models under disorder. Joint work with Maciej Zworski\, Izak Oltman\, Martin Vogel\, and Mengxuan Yang.
URL:http://www.trr352.de/event/magic-moire-materials-with-a-twist/
LOCATION:Room C3N14\, Auf der Morgenstelle 10\, Tübingen\, 72076\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250613T140000
DTEND;TZID=Europe/Berlin:20250613T140000
DTSTAMP:20260503T184058
CREATED:20250701T142444Z
LAST-MODIFIED:20250701T142700Z
UID:10000033-1749823200-1749823200@www.trr352.de
SUMMARY:Quantum Tomography from the Evolution of a Single Expectation
DESCRIPTION:Conventional quantum tomography assumes a high degree of control over the system in question in order to measure many observables. On the other hand\, a classical dynamical system may be reconstructed from a time series of a single observable by means of delay embeddings. Inspired by this\, we investigate the possibility of tomography of a quantum system undergoing a known homogenous time evolution when we have control over only the time of measurement. Remarkably\, full quantum state tomography is possible for every non-trivial binary measurement evolved by any quantum channel\, bar a null set. This remains true when restricted to Lindblad semigroups\, although unitary evolution–even with added simply depolarizing noise–is insufficient beyond the qubit case\, highlighting the need for non-trivial noise. We explore various further aspects of the problem\, including prior information\, expectation bounds for finite statistics\, and recovery of an infinite time series of expectation values from a finite one given only spectral properties of the evolution.
URL:http://www.trr352.de/event/quantum-tomography-from-the-evolution-of-a-single-expectation/
LOCATION:Room 5612.02.020 (Besprechungsraum)\, Boltzmannstr. 3\, Garching b. München\, 85748\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Corlie Rall":MAILTO:hjalmar.rall@tum.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250605T121500
DTEND;TZID=Europe/Berlin:20250605T121500
DTSTAMP:20260503T184058
CREATED:20250327T191902Z
LAST-MODIFIED:20260219T213308Z
UID:10000003-1749125700-1749125700@www.trr352.de
SUMMARY:Regularized Dynamical Parametric Approximation for Stiff Evolution Problems
DESCRIPTION:Evolutionary deep neural networks have emerged as a rapidly growing field of research. This talk discusses numerical integrators for such and other classes of nonlinear parametrizations u(t) = Φ(θ(t)) where the evolving parameters θ(t) are to be computed. The primary focus is on tackling the challenges posed by the combination of stiff evolution problems and irregular parametrizations\, which typically arise with neural networks\, tensor networks\, flocks of evolving Gaussians\, and in further cases of overparametrization. Regularized parametric versions of the implicit Euler method and higher-order implicit Runge–Kutta methods for the time integration of the parameters in nonlinear approximations to evolutionary partial differential equations are presented. At each time step\, an ill-conditioned nonlinear optimization problem is solved approximately with a few regularized Gauß–Newton iterations. Error bounds for the resulting parametric integrator are derived by relating the computationally accessible Gauß–Newton iteration for the parameters to the computationally inaccessible Newton iteration for the underlying non-parametric time integration scheme. Numerical experiments that are designed to show key properties of the proposed parametric integrators are discussed.
URL:http://www.trr352.de/event/regularized-dynamical-parametric-approximation-for-stiff-evolution-problems/
LOCATION:Room 03.10.011\, Boltzmannstr. 3\, Garching Forschungszentrum\, 85748\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Dr. J%C3%B6rg Nick":MAILTO:joerg.nick@math.ethz.ch
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250604T160000
DTEND;TZID=Europe/Berlin:20250604T160000
DTSTAMP:20260503T184058
CREATED:20250701T142959Z
LAST-MODIFIED:20250701T143753Z
UID:10000034-1749052800-1749052800@www.trr352.de
SUMMARY:DFG Funding Opportunities and Key Evaluation Criteria in DFG Proposals
DESCRIPTION:
URL:http://www.trr352.de/event/dfg-funding-opportunities-and-key-evaluation-criteria-in-dfg-proposals/
LOCATION:Room B 349\, Theresienstr. 39\, Munich\, 80333\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Brit Red%C3%B6hl":MAILTO:Brit.Redoehl@dfg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250603T163000
DTEND;TZID=Europe/Berlin:20250603T163000
DTSTAMP:20260503T184058
CREATED:20250701T143532Z
LAST-MODIFIED:20250904T103339Z
UID:10000035-1748968200-1748968200@www.trr352.de
SUMMARY:Stabilization by quantum fluctuations in ultracold gases of magnetic atoms: experimental observations and theory descriptions
DESCRIPTION:Thanks to their high degree of control and tunability\, ultracold atomic gases provide a rich platform for the study of quantum many-body effects. Ultracold gases of highly magnetic atoms exhibit unique interaction properties that lead to striking behaviors\, both at the mean-field level and beyond [1]. A decade ago\, a universal stabilization mechanism driven by quantum fluctuations was discovered in these gases. This mechanism prevents the systems from collapsing when the mean-field interactions become attractive\, and instead allows exotic states of matter to arise\, including ultradilute quantum droplets\, crystallized quantum states\, and especially the so-called supersolids [2]. In my colloquium\, I will present the seminal observations of these states and how they emerged from the long-standing progress in the field. I will discuss the theoretical description of these systems via an effective mean-field theory\, including the effect of quantum fluctuations via a higher-order effective interaction. I will outline our current understanding of the properties of these states and highlight open questions. \n[1] L. Chomaz & al\, Dipolar physics: a review of experiments with magnetic quantum gases\, Reports on Progress in Physics 86\, 026401 (2023).\n[2] L. Chomaz\, Quantum-stabilized states in magnetic dipolar quantum gases\, arXiv preprint 2504.06221 (2025)
URL:http://www.trr352.de/event/stabilization-by-quantum-fluctuations-in-ultracold-gases-of-magnetic-atoms-experimental-observations-and-theory-descriptions/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Prof. Dr. Lauriane Chomaz":MAILTO:chomaz@uni-heidelberg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250528T140000
DTEND;TZID=Europe/Berlin:20250528T140000
DTSTAMP:20260503T184058
CREATED:20250701T144844Z
LAST-MODIFIED:20250701T144844Z
UID:10000037-1748440800-1748440800@www.trr352.de
SUMMARY:Wasserstein spaces and error control in approximations by neural networks
DESCRIPTION:We explore a connection between a weak topology on spaces of probability measures\, a classical combinatorial problem in matching\, and numerical schemes for the solution of PDEs by neural networks.
URL:http://www.trr352.de/event/wasserstein-spaces-and-error-control-in-approximations-by-neural-networks/
LOCATION:University of Augsburg\, Room 2004 (L1)\, Universitätsstraße 14\, Augsburg\, 86159
CATEGORIES:Talks
ORGANIZER;CN="Michalis Loulakis":MAILTO:loulakis@math.ntua.gr
END:VEVENT
END:VCALENDAR