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BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241105T161500
DTEND;TZID=Europe/Berlin:20241105T161500
DTSTAMP:20260504T072739
CREATED:20250704T074153Z
LAST-MODIFIED:20250704T074153Z
UID:10000057-1730823300-1730823300@www.trr352.de
SUMMARY:Quantum Walks: Their basic properties and dynamical localization
DESCRIPTION:Quantum walks (QWs) can be viewed as quantum analogs of classical random walks. Mathematically\, a QW is described as a unitary\, local operator acting on a grid and can be written as a product of shift and coin operators. We highlight differences to classical random walks and stress their connection to quantum algorithms (see Grover’s algorithm). If the QW is assumed to be translation invariant\, applying the Fourier transform yields a multiplication operator\, whose bandstructure we briefly study. After equipping the underlying lattice with random phases\, we turn to dynamical localization. This means that the probability to move from one lattice site to another decreases on average exponentially in the distance\, independently of how many steps the QW may take. We sketch the proof of dynamical localization on the hexagonal lattice in the regime of strong disorder\, which uses a finite volume method.
URL:http://www.trr352.de/event/quantum-walks-their-basic-properties-and-dynamical-localization/
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:20241105T180000
DTEND;TZID=Europe/Berlin:20241105T180000
DTSTAMP:20260504T072739
CREATED:20250704T073809Z
LAST-MODIFIED:20250704T073809Z
UID:10000056-1730829600-1730829600@www.trr352.de
SUMMARY:Weyl asymptotics for Lipschitz domains
DESCRIPTION:
URL:http://www.trr352.de/event/weyl-asymptotics-for-lipschitz-domains/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241107T000000
DTEND;TZID=Europe/Berlin:20241108T235959
DTSTAMP:20260504T072739
CREATED:20250604T122418Z
LAST-MODIFIED:20250604T122418Z
UID:10000015-1730937600-1731110399@www.trr352.de
SUMMARY:Eigenvalue estimates for Laplace and Schrödinger operators
DESCRIPTION:
URL:http://www.trr352.de/event/eigenvalue-estimates-for-laplace-and-schrodinger-operators/
LOCATION:University of Stuttgart\, Seminarraum des IADM 8.122\, Pfaffenwaldring 57\, Stuttgart\, 70569\, Germany
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241107T160000
DTEND;TZID=Europe/Berlin:20241107T160000
DTSTAMP:20260504T072739
CREATED:20250704T073450Z
LAST-MODIFIED:20250904T103351Z
UID:10000055-1730995200-1730995200@www.trr352.de
SUMMARY:How to represent a function in a quantum computer
DESCRIPTION:Quantum Signal Processing (QSP) is an algorithmic process by which one represents a signal $f: [0\,1] \to (-1\,1)$ as the upper left entry of a product of $SU(2)$ matrices parametrized by the input variable $x \in [0\,1]$ and some ”phase factors” $\{\psi_k\}_{k \geq 0}$ depending on $f$. We show that\, after a change of variables\, QSP is actually the SU(2)-valued nonlinear Fourier transform\, and the phase factors $\{\psi_k\}_k$ correspond to the nonlinear Fourier coefficients. By exploiting a nonlinear Plancherel identity and using some basic spectral theory\, we then show that a QSP representation exists for every $f$ satisfying the log integrability condition \[ \int\limits_{0} ^1 \log (1-f(x)^2) \frac{dx}{\sqrt{1-x^2}} > – \infty \\, . \]
URL:http://www.trr352.de/event/how-to-represent-a-function-in-a-quantum-computer/
LOCATION:Room C3N14\, Auf der Morgenstelle 10\, Tübingen\, 72076\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241113T180000
DTEND;TZID=Europe/Berlin:20241113T180000
DTSTAMP:20260504T072739
CREATED:20250704T072901Z
LAST-MODIFIED:20250704T072901Z
UID:10000054-1731520800-1731520800@www.trr352.de
SUMMARY:Lagrange\, Euler\, Hooke\, and Cauchy
DESCRIPTION:
URL:http://www.trr352.de/event/lagrange-euler-hooke-and-cauchy/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241113T190000
DTEND;TZID=Europe/Berlin:20241113T190000
DTSTAMP:20260504T072739
CREATED:20250704T072528Z
LAST-MODIFIED:20250704T072528Z
UID:10000053-1731524400-1731524400@www.trr352.de
SUMMARY:Around Segal Axioms for QFT: construction and interpretations
DESCRIPTION:
URL:http://www.trr352.de/event/around-segal-axioms-for-qft-construction-and-interpretations/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Jiasheng Lin":MAILTO:jiasheng.lin@imj-prg.fr
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241119T161500
DTEND;TZID=Europe/Berlin:20241119T161500
DTSTAMP:20260504T072739
CREATED:20250707T133348Z
LAST-MODIFIED:20250829T140629Z
UID:10000106-1732032900-1732032900@www.trr352.de
SUMMARY:Quantum Advantage in Games of Incomplete Information
DESCRIPTION:Competitive games of complete information famously always have Nash equilibria\, but it is well-known that correlation (“advice”) can yield new equilibria\, sometimes with preferable collective properties (social welfare\, fairness\, …). While it is known that quantum correlations in the form of entanglement do not imply further correlated equilibria\, this situation changes when going to so-called Bayesian games of incomplete information\, where each player has to react to a privately known type\, while being ignorant about the type of the other players. \nIn fact\, when all players in the game share the same payoff function\, this reproduces the “nonlocal games” studied in quantum mechanics since Bell\, in which case the CHSH inequality separates classical from quantum correlation and quantum from no-signalling. \nIn the talk\, I will review\, how classical correlations\, shared quantum states and no-signalling correlations can create a hierarchy of sets of classically correlated\, quantum and belief-invariant equilibria of conflict-of-interest games\, all containing the set of Nash equilibria. I will show a simple and easy-to-analyze construction of such games based on quantum pseudo-telepathy games\, which show the quantum advantage of larger social welfare and of fairer distribution of payoff. \n[Based on work with V. Auletta\, D. Ferraioli\, A. Rai and G. Scarpa\, arXiv:1605.07896\,  and with M. Cerda (BSc thesis\, UAB 2021).]
URL:http://www.trr352.de/event/quantum-advantage-in-games-of-incomplete-information/
LOCATION:Room 5601.EG.001 (Magistrale)\, Boltzmannstr. 3\, Garching b. München\, 85748\, Germany
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241128T160000
DTEND;TZID=Europe/Berlin:20241128T160000
DTSTAMP:20260504T072739
CREATED:20250704T071829Z
LAST-MODIFIED:20250829T134650Z
UID:10000052-1732809600-1732809600@www.trr352.de
SUMMARY:Semi-classical limit in Quantum mechanics: Dynamics and Beyond
DESCRIPTION:
URL:http://www.trr352.de/event/semi-classical-limit-in-quantum-mechanics-dynamics-and-beyond/
LOCATION:Room C3N14\, Auf der Morgenstelle 10\, Tübingen\, 72076\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241204T160000
DTEND;TZID=Europe/Berlin:20241204T160000
DTSTAMP:20260504T072739
CREATED:20250703T142205Z
LAST-MODIFIED:20250703T142205Z
UID:10000051-1733328000-1733328000@www.trr352.de
SUMMARY:Rapid thermalisation of quantum dissipative many-body systems
DESCRIPTION:Quantum systems typically reach thermal equilibrium when in weak contact with a large external bath. Understanding the speed of this thermalisation is a challenging problem\, especially in the context of quantum many-body systems where direct calculations are intractable. The usual way of bounding the speed of this process is by estimating the spectral gap of the dissipative generator\, but this does not always yield a reasonable estimate for the thermalisation time. When the system satisfies instead a modified logarithmic Sobolev inequality (MLSI)\, the thermalisation time is at most logarithmic in the system size\, yielding wide-ranging applications to the study of many-body in and out-of-equilibrium quantum systems\, such as stability against local perturbations (in the generator)\, efficient preparation of Gibbs states (the equilibria of these processes)\, etc. \nIn this talk\, I will present an overview on a strategy to prove that a system satisfies a MLSI provided that correlations decay sufficiently fast between spatially separated regions on the Gibbs state of a local\, commuting Hamiltonian in any dimension. I will subsequently review the current state of the art for Davies dissipative generators thermalising to such Gibbs states.
URL:http://www.trr352.de/event/rapid-thermalisation-of-quantum-dissipative-many-body-systems/
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:20241210T160000
DTEND;TZID=Europe/Berlin:20241210T160000
DTSTAMP:20260504T072739
CREATED:20250404T185700Z
LAST-MODIFIED:20250404T190105Z
UID:10000011-1733846400-1733846400@www.trr352.de
SUMMARY:Mathematical Advances in BCS Theory of Superconductivity
DESCRIPTION:Bardeen-Cooper-Schrieffer (BCS) theory is a successful model of superconductivity. In this talk\, I will begin by providing an overview of how BCS theory connects with other models of superconductivity\, highlighting major open questions and recent developments in the field. Second\, I will explain recent results on the critical temperature in the presence of a boundary in more detail.
URL:http://www.trr352.de/event/mathematical-advances-in-bcs-theory-of-superconductivity/
LOCATION:Seminar Room\, 4th floor\, Auf der Morgenstelle 10\, Tübingen\, 72076\, Germany
CATEGORIES:Junior Coffee Breaks
ORGANIZER;CN="Dr. Barbara Roos":MAILTO:barbara.roos@uni-tuebingen.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241212T163000
DTEND;TZID=Europe/Berlin:20241212T163000
DTSTAMP:20260504T072739
CREATED:20250703T141555Z
LAST-MODIFIED:20250703T141555Z
UID:10000050-1734021000-1734021000@www.trr352.de
SUMMARY:Landau damping
DESCRIPTION:Of great interest in plasma physics is to determine whether excited charged particles in a non-equilibrium state will relax to neutrality or transition to a nontrivial coherent state. Due to the long range interaction between particles\, the self-consistent generating electric field oscillates in time and disperses in space like a Klein-Gordon wave\, known in the physical literature as plasma oscillations or Langmuir’s oscillatory waves. Landau in his original work addresses the decay of such an electric field\, namely the energy exchange between the oscillatory electric field and charged particles\, in a linearized setting. This talk will provide an overview of the recent mathematical advances in the nonlinear setting. The talk should be accessible to graduate students and the general audience.
URL:http://www.trr352.de/event/landau-damping/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241215T000000
DTEND;TZID=Europe/Berlin:20241220T235959
DTSTAMP:20260504T072739
CREATED:20250604T122049Z
LAST-MODIFIED:20250604T122049Z
UID:10000014-1734220800-1734739199@www.trr352.de
SUMMARY:Mathematical Physics and PDEs
DESCRIPTION:
URL:http://www.trr352.de/event/mathematical-physics-and-pdes/
LOCATION:Haus der bayerischen Landwirtschaft\, Rieder Str. 70\, Herrsching am Ammersee\, 82211\, Germany
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241216T000000
DTEND;TZID=Europe/Berlin:20241220T235959
DTSTAMP:20260504T072739
CREATED:20250604T121603Z
LAST-MODIFIED:20250604T121603Z
UID:10000013-1734307200-1734739199@www.trr352.de
SUMMARY:Correlations of Quantum Many-Body Systems
DESCRIPTION:
URL:http://www.trr352.de/event/correlations-of-quantum-many-body-systems/
LOCATION:Department of Mathematics\, Room N14\, Auf der Morgenstelle 10\, Tübingen\, 72076\, Germany
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241216T143000
DTEND;TZID=Europe/Berlin:20241216T143000
DTSTAMP:20260504T072739
CREATED:20250703T141233Z
LAST-MODIFIED:20250703T141233Z
UID:10000048-1734359400-1734359400@www.trr352.de
SUMMARY:Phase diagram of the loop O(n) model
DESCRIPTION:Phase transitions are natural phenomena in which a small change in an external parameter\, like temperature or pressure\, causes a dramatic change in the qualitative structure of the object. To study this\, many scientists (such as Nobel laureates Pauling and Flory) proposed the abstract framework of lattice models. The focus of this talk is on the loop O(n) model on the hexagonal lattice. Among its particular cases are percolation\, Ising model\, self-avoiding walk\, dimers\, integer-valued Lipschitz functions\, proper 4-colourings and others. The loop O(n) model has attracted a lot of attention due to its rich phase diagram that includes a large region of parameters with an expected conformally invariant scaling limit. The model is difficult to study due to the lack of monotonicity with respect to parameters: each point of the phase diagram should be treated separately. In particular\, existence of macroscopic loops has been established only recently in several sparse regions of parameters. I will present a unifying approach that applies to all n between 1 and 2. Main tools: novel graphical representation\, Benjamini—Schramm limit\, XOR argument (aka arXiv:2001.11977) and a new bound on a percolation threshold (due to Harel and Zelesko). This is joint work with Matan Harel (Northeastern).
URL:http://www.trr352.de/event/phase-diagram-of-the-loop-on-model/
LOCATION:Room B 349\, Theresienstr. 39\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20241216T143000
DTEND;TZID=Europe/Berlin:20241216T143000
DTSTAMP:20260504T072739
CREATED:20250703T141417Z
LAST-MODIFIED:20250703T141417Z
UID:10000049-1734359400-1734359400@www.trr352.de
SUMMARY:The hypergraph removal process
DESCRIPTION:Fix some graph or uniform hypergraph F and then consider the following simple process:\nstart with a large complete (hyper)graph Kn on n vertices and iteratively remove (the edge set of) copies of F as long as possible; each selection is made uniformly among all present copies of F at that time. This process is known as the F-removal process. The determination of the termination time (how many edges are left when the process terminates) is the key question regarding this process. This question has proven to be highly challenging. Bohman\, Frieze and Lubetzky famously proved in 2015 that the triangle-removal process (F is a triangle) typically terminates with n3/2+o(1) edges. For no other (hyper)graph F has the termination of the F-removal process been established. We determine when the F-removal process ends for all “sensible” choices of F; this includes cliques\, for which a major folklore conjecture in this area predicts the termination time.\nThis is joint work with Marcus Kühn.
URL:http://www.trr352.de/event/the-hypergraph-removal-process/
LOCATION:Room B 349\, Theresienstr. 39\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250121T000000
DTEND;TZID=Europe/Berlin:20250124T235959
DTSTAMP:20260504T072739
CREATED:20250707T135744Z
LAST-MODIFIED:20260129T194533Z
UID:10000113-1737417600-1737763199@www.trr352.de
SUMMARY:Junior Meeting
DESCRIPTION:January 21-24\, 2025 at Christkönigshaus\, Stuttgart \n \n  \n\nSpeakers: \nJonas Peteranderl (LMU)\nSara Terveer (LMU)\nFrançois Visconti (LMU)\nPaul Gondolf (Tub)\nYifei Li (Tub)\nTom Wessel (Tub)\nPablo Costa Rico (TUM)\nCorlie Rall (TUM)\nAnouar Kouraich (TUM)\nBeatriz Dias (TUM)\nYifan Jia (Copenhagen) \nProgram:\n \nSchedule Junior Meeting 25\nAbstracts Junior Meeting Jan 25\nWorkshop Time-Management\n  \n \n  \n \n  \nOrganizers: \nAlberto Brollo (TUM)\nEmanuela Giacomelli (LMU Munich)\nFlorian Haberberger (LMU Munich)\nEmilio Onorati (TUM)\nCarla Rubiliani (Tübingen University)\nOliver Siebert (Tübingen University) \n\nVenue: \nChristkönigshaus\nParacelsusstraße 89\n70599 Stuttgart\nTelefon 0711 458 282-3 \nHow to get there: \nhttps://www.christkoenigshaus.de/meta/anreise.html
URL:http://www.trr352.de/event/junior-meeting-2/
LOCATION:Christkönigshaus\, Paracelsusstraße 89\, Stuttgart\, 70599\, Germany
CATEGORIES:Retreats
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250121T161500
DTEND;TZID=Europe/Berlin:20250121T161500
DTSTAMP:20260504T072739
CREATED:20250703T141055Z
LAST-MODIFIED:20250703T141055Z
UID:10000047-1737476100-1737476100@www.trr352.de
SUMMARY:Zigzag strategy for random matrices
DESCRIPTION:It is a remarkable property of random matrices\, that their resolvents tend to concentrate around a deterministic matrix as the dimension of the matrix tends to infinity\, even for a small imaginary part of the involved spectral parameter. These estimates are called local laws and they are the cornerstone in most of the recent results in random matrix theory. In this talk\, I will present a novel method of proving single-resolvent and multi-resolvent local laws for random matrices\, the Zigzag strategy\, which is a recursive tandem of the characteristic flow method and a Green function comparison argument. Novel results\, which we obtained via the Zigzag strategy\, include the optimal Eigenstate Thermalization Hypothesis (ETH) for Wigner matrices\, uniformly in the spectrum\, and universality of eigenvalue statistics at cusp singularities for correlated random matrices.\nBased on joint works with G. Cipolloni\, L. Erdös\, O. Kolupaiev\, and V. Riabov.
URL:http://www.trr352.de/event/zigzag-strategy-for-random-matrices/
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:20250124T143000
DTEND;TZID=Europe/Berlin:20250124T143000
DTSTAMP:20260504T072739
CREATED:20250703T130425Z
LAST-MODIFIED:20250703T130425Z
UID:10000045-1737729000-1737729000@www.trr352.de
SUMMARY:Dimensional Phase Transition in Random Walk Loop Soup
DESCRIPTION:We consider a system of closed random walk trajectories interacting by mutual repulsion. This probabilistic model is motivated by its connections to statistical mechanics models\, such as the Bose gas\, the double dimer model\, or the spin O(N) model. We prove the occurrence of macroscopic loops in dimension d>2 (joint with A. Quitmann\, 2022) and the absence of macroscopic loops in dimension d=2 (joint with W. Wu\, 2024). The talk will primarily focus on the two-dimensional case\, which is analyzed using a novel complex spin representation and the derivation of a Mermin-Wagner theorem for complex measures.
URL:http://www.trr352.de/event/dimensional-phase-transition-in-random-walk-loop-soup/
LOCATION:University of Augsburg\, Room 2004 (L1)\, Universitätsstraße 14\, Augsburg\, 86159
CATEGORIES:Talks
ORGANIZER;CN="Prof. Lorenzo Taggi":MAILTO:lorenzo.taggi@uniroma1.it
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250124T143000
DTEND;TZID=Europe/Berlin:20250124T143000
DTSTAMP:20260504T072739
CREATED:20250703T130603Z
LAST-MODIFIED:20250703T130603Z
UID:10000046-1737729000-1737729000@www.trr352.de
SUMMARY:Dynamical Gibbs variational principles for irreversible interacting particle systems with applications to attractor properties
DESCRIPTION:In this talk\, we consider irreversible translation-invariant interacting particle systems on the d-dimensional hypercubic lattice with finite local state space\, which admit at least one Gibbs measure as a time-stationary measure. Under some mild degeneracy conditions on the rates and the specification we prove\, that zero relative entropy loss of a translation-invariant measure implies\, that the measure is Gibbs with respect to the same specification as the time-stationary Gibbs measure. As an application\, we obtain the attractor property for irreversible interacting particle systems\, which says that any weak limit point of any trajectory of translation-invariant measures is a Gibbs measure with respect to the same specification as the time-stationary measure. This extends previously known results to fairly general irreversible interacting particle systems and joined work with Jonas Köppl.
URL:http://www.trr352.de/event/dynamical-gibbs-variational-principles-for-irreversible-interacting-particle-systems-with-applications-to-attractor-properties/
LOCATION:University of Augsburg\, Room 2004 (L1)\, Universitätsstraße 14\, Augsburg\, 86159
CATEGORIES:Talks
ORGANIZER;CN="Prof. Dr. Benedikt Jahnel":MAILTO:Benedikt.Jahnel@tu-braunschweig.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250129T180000
DTEND;TZID=Europe/Berlin:20250129T180000
DTSTAMP:20260504T072739
CREATED:20250703T130235Z
LAST-MODIFIED:20250703T130235Z
UID:10000044-1738173600-1738173600@www.trr352.de
SUMMARY:Estimates on the nodal set of Dirac equations
DESCRIPTION:
URL:http://www.trr352.de/event/estimates-on-the-nodal-set-of-dirac-equations/
LOCATION:Room A 027\, Theresienstr. 37\, Munich\, 80333\, Germany
CATEGORIES:Talks
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250205T121500
DTEND;TZID=Europe/Berlin:20250205T121500
DTSTAMP:20260504T072739
CREATED:20250404T163259Z
LAST-MODIFIED:20250404T163614Z
UID:10000007-1738757700-1738757700@www.trr352.de
SUMMARY:From tensor networks to Frobenius Schur indicators: some applications of state-sum models with boundaries
DESCRIPTION:State-sum constructions have numerous applications in both mathematics and physics. In mathematics\, they yield invariants for knots and manifolds and serve as a powerful organizing principle in representation theory. To illustrate this principle\, we discuss equivariant Frobenius-Schur indicators. In the context of physics\, we explain how state-sum models offer a conceptual framework for tensor network models\, based on collaboration with Fuchs\, Haegeman\, Lootens\, and Verstraete.
URL:http://www.trr352.de/event/from-tensor-networks-to-frobenius-schur-indicators-some-applications-of-state-sum-models-with-boundaries/
LOCATION:Room HS3 (MI 00.06.011)\, Boltzmannstr. 3\, Garching Forschungszentrum\, 85748\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Prof. Dr. Christoph Schweigert":MAILTO:christoph.schweigert@uni-hamburg.de
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250206T121500
DTEND;TZID=Europe/Berlin:20250206T150000
DTSTAMP:20260504T072739
CREATED:20250403T182452Z
LAST-MODIFIED:20250507T064024Z
UID:10000004-1738844100-1738854000@www.trr352.de
SUMMARY:On the error analysis of full discretizations of Friedrichs' systems
DESCRIPTION:In this talk\, we address the full discretization of Friedrichs’ systems with a two-field structure\, such as Maxwell’s equations or the acoustic wave equation in div-grad form. \nWe follow a method of lines approach\, where we first discretize in space via the discontinuous Galerkin method. Subsequently\, we consider different second-order schemes for time integration\, namely the Crank–Nicolson scheme\, the leapfrog scheme\, and a general class of local time integration methods which comprises a locally implicit and a new local time-stepping scheme. We show the stability of the fully discrete schemes (subject to an appropriate CFL condition where necessary) and error bounds that are optimal in space and time and robust under mesh refinement. These bounds are derived within a unified error analysis based on the fact that all schemes can be interpreted as perturbations of the Crank–Nicolson scheme. \nWe conclude with numerical experiments in which we compare different local time integration methods for Maxwell’s equations. \nThis is joint work with Malik Scheifinger\, KIT \nFunded by the Deutsche Forschungsgemeinschaft (DFG\, German Research Foundation) – Project-ID 258734477 – SFB 1173
URL:http://www.trr352.de/event/on-the-error-analysis-of-full-discretizations-of-friedrichs-systems/
LOCATION:Room 03.10.011\, Boltzmannstr. 3\, Garching Forschungszentrum\, 85748\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Prof. Dr. Marlis Hochbruck":MAILTO:marlis.hochbruck@kit.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250213T161500
DTEND;TZID=Europe/Berlin:20250213T161500
DTSTAMP:20260504T072739
CREATED:20250707T133135Z
LAST-MODIFIED:20250829T140603Z
UID:10000105-1739463300-1739463300@www.trr352.de
SUMMARY:The Mathematics of Locality in Many-Body Quantum Systems
DESCRIPTION:In relativity\, nothing can travel faster than the speed of light. But there are often emergent speed limits\, such as the speed of sound\, that limit practical information transfer. In quantum many-body lattice models\, the existence of this emergent speed limit was first proved by Lieb and Robinson in 1972. Over 50 years later\, their result has formed the backbone of very important results in mathematical physics. I will present a modern perspective on the Lieb-Robinson Theorem and present a selection of its applications\, such as: constraining the time to prepare entangled states\, the simulatability of quantum physics on classical computers\, and the decay of the false vacuum in metastable quantum states.
URL:http://www.trr352.de/event/the-mathematics-of-locality-in-many-body-quantum-systems/
LOCATION:Room C3N14\, Auf der Morgenstelle 10\, Tübingen\, 72076\, Germany
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250219T000000
DTEND;TZID=Europe/Berlin:20250223T235959
DTSTAMP:20260504T072739
CREATED:20250605T120906Z
LAST-MODIFIED:20250605T120906Z
UID:10000020-1739923200-1740355199@www.trr352.de
SUMMARY:Molecular Dynamics
DESCRIPTION:
URL:http://www.trr352.de/event/molecular-dynamics/
LOCATION:University of Angers\, 40 Rue de Rennes\, Angers\, 49100\, France
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250317T000000
DTEND;TZID=Europe/Berlin:20250321T235959
DTSTAMP:20260504T072739
CREATED:20250618T103057Z
LAST-MODIFIED:20250618T103057Z
UID:10000027-1742169600-1742601599@www.trr352.de
SUMMARY:TRR 352 Winter School on Mathematical Physics
DESCRIPTION:
URL:http://www.trr352.de/event/trr-352-winter-school-on-mathematical-physics-2/
LOCATION:Georg-von-Vollmar-Akademie\, Am Aspensteinbichl 9\, Kochel am See\, 82431\, Germany
CATEGORIES:Schools
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250404T000000
DTEND;TZID=Europe/Berlin:20250404T235959
DTSTAMP:20260504T072739
CREATED:20250327T143242Z
LAST-MODIFIED:20250404T152905Z
UID:10000002-1743724800-1743811199@www.trr352.de
SUMMARY:Minisymposium on the recent proof of the ovals conjecture
DESCRIPTION:Program: \n11:00 am – Dr. Larry Read\, LMU München: Proof of the oval conjecture (Part 1) \nlunch \n1:30 pm – Matthias Baur\, M.Sc.\, Universität Stuttgart: Proof of the oval conjecture (Part 2) \ncoffee and discussion
URL:http://www.trr352.de/event/minisymposium-on-the-recent-proof-of-the-ovals-conjecture/
LOCATION:University of Stuttgart\, Seminarraum des IADM 8.526\, Pfaffenwaldring 57\, Stuttgart\, 70569\, Germany
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250408T000000
DTEND;TZID=Europe/Berlin:20250412T235959
DTSTAMP:20260504T072739
CREATED:20250605T120448Z
LAST-MODIFIED:20260315T182636Z
UID:10000019-1744070400-1744502399@www.trr352.de
SUMMARY:Frontiers in Analysis and Mathematical Physics
DESCRIPTION:
URL:http://www.trr352.de/event/frontiers-in-analysis-and-mathematical-physics/
LOCATION:Seoul National University\, 1 Gwanak-ro\, Gwanak-gu\, Seoul\, Korea\, Republic of
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250410T160000
DTEND;TZID=Europe/Berlin:20250410T160000
DTSTAMP:20260504T072739
CREATED:20250702T133349Z
LAST-MODIFIED:20250702T133349Z
UID:10000042-1744300800-1744300800@www.trr352.de
SUMMARY:Spectral measure for uniform d-regular digraphs
DESCRIPTION:
URL:http://www.trr352.de/event/spectral-measure-for-uniform-d-regular-digraphs/
LOCATION:Room C3N14\, Auf der Morgenstelle 10\, Tübingen\, 72076\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Arka Adhikari":MAILTO:arkaa@umd.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250421T000000
DTEND;TZID=Europe/Berlin:20250426T235959
DTSTAMP:20260504T072739
CREATED:20250605T114841Z
LAST-MODIFIED:20250605T115549Z
UID:10000018-1745193600-1745711999@www.trr352.de
SUMMARY:Modern Methods for Differential Equations of Quantum Mechanics
DESCRIPTION:
URL:http://www.trr352.de/event/modern-methods-for-differential-equations-of-quantum-mechanics/
LOCATION:Banff International Research Station\, 107 Tunnel Mountain Dr\, Banff\, AB T1L 1H5\, Canada
CATEGORIES:Workshops/Conferences
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Berlin:20250428T150000
DTEND;TZID=Europe/Berlin:20250428T150000
DTSTAMP:20260504T072739
CREATED:20250701T150125Z
LAST-MODIFIED:20250701T150125Z
UID:10000040-1745852400-1745852400@www.trr352.de
SUMMARY:Phase transition for the late points of random walk
DESCRIPTION:Let X be a simple random walk in Znd with d≥3 and let tcov be the expected time it takes for X to visit all vertices of the torus. In joint work with Prévost and Rodriguez we study the set Lα of points that have not been visited by time αtcov and prove that it exhibits a phase transition: there exists α∗ so that for all α>α∗ and all ϵ>0 there exists a coupling between Lα and two i.i.d. Bernoulli sets B± on the torus with parameters n−(a±ϵ)d with the property that B−⊆Lα⊆B+ with probability tending to 1 as n→∞. When α≤α∗\, we prove that there is no such coupling.
URL:http://www.trr352.de/event/phase-transition-for-the-late-points-of-random-walk/
LOCATION:Room B 349\, Theresienstr. 39\, Munich\, 80333\, Germany
CATEGORIES:Talks
ORGANIZER;CN="Prof. Perla Sousi":MAILTO:P.Sousi@statslab.cam.ac.uk
END:VEVENT
END:VCALENDAR