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Irene Prieto Rodriguez (LMU/MPQ)18/05/2026, 17:30Talk
Locally constrained gauge theories underpin our understanding of fundamental interactions in particle physics and the behaviour of quantum materials. In strongly correlated systems, they can give rise to quantum spin liquids that lack conventional order and are defined by coherent superposition of many-body configurations. Realising and probing such exotic states experimentally remains...
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Monika Aidelsburger18/05/2026, 18:00Talk
Project E4
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Melissa Will (TUM School of Natural Sciences, Munich Center for Quantum Science and Technology)19/05/2026, 09:45Talk
Recent results!
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Cheryne Jonay19/05/2026, 10:45Talk
This talk starts from Fock-space cages, which are localized many-body eigenstates stabilized through destructive interference in the state space. I then turn to the spectral setting that makes such states possible: constrained spin chains with an exponentially large manifold of exact zero modes, a hard gap around zero energy, and otherwise chaotic bulk dynamics described by chiral random...
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Tom Arie Ben Ami (Universitat Augsburg)19/05/2026, 11:15Talk
We identify the many-body counterpart of flat bands, which we call many-body caging, as a general mechanism for non-equilibrium phenomena such as a novel type of glassy eigenspectrum order and many-body Rabi oscillations in the time domain. We focus on constrained systems of great current interest in the context of Rydberg atoms and synthetic or emergent gauge theories. We find that their...
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Jonas Auch (GNOI)19/05/2026, 11:45Talk
Creating quantum mixtures can be a challenging, yet highly awarding goal. While many quantum mixture experiments rely on atoms of different spin states or isotopes, the approach of this experiment relies on two atoms as far apart as currently reachable. While lithium-6 is a fermionic and light atom, erbium-166 is a bosonic and heavy counterpart. This strongly mass imbalanced mixture possesses...
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María Cea Fernández (Max Planck Institute of Quantum Optics)19/05/2026, 14:45Talk
Coexistence of different dynamical phases is a hallmark of glassy behavior, widely studied in classical systems via large deviation theory. Similar phase coexistence has been suggested in quantum many-body systems, but a systematic study has been challenging due to the lack of suitable methods. Here, I present a tensor network framework that enables large deviation analysis in large quantum...
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Stefan Kehrein (UPTP)19/05/2026, 16:00Talk
Interaction quenches are usually associated with heating of isolated quantum system. However, starting from non-zero temperature interaction quenches can also cool quantum systems. This is shown explicitly for the 1d Hubbard model using numerical methods, perturbative analytical methods and Bethe ansatz results. Depending on the parameter regime cooling can occur on prethermal time scales or...
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Kadir Çeven (Georg-August-Universität Göttingen)20/05/2026, 09:45Talk
The eigenstate thermalization hypothesis (ETH) explains how closed quantum systems thermalize, with off-diagonal matrix elements—described by a smooth spectral function—governing relaxation dynamics. [[Çeven et al., PRB 113, 045126 (2026)]][1] proposed a hiearchy between the Thouless freqeuncy (set by transport) and the random-matrix-theory (RMT) frequency (set by spectral statistics) in a...
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Federico Balducci (MPI PKS)20/05/2026, 10:45Talk
We present a simple theory accounting for two central observations in a recent experiment on quantum coarsening and collective dynamics on a programmable quantum simulator [T. Manovitz et al., Nature 638, 86 (2025)]: an apparent speeding up of the coarsening process as the phase transition is approached; and persistent oscillations of the order parameter after quenches within the ordered...
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Daniel Adler (MGQO)20/05/2026, 11:15Talk
In this talk, we present our recent advances in project E1. In particular, we showcase our newly installed "magic" lattice with reduced spacing, which enhances cooperative light-matter interactions while reducing systematic heating. We report on our work towards the observation of subradiant excitations in a near-unity filled array of atomic dipoles. In the end, we will also provide an outlook...
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Yahui Li (Technische Universität München)20/05/2026, 11:45Talk
In chaotic quantum many-body systems, it was shown that the relaxation timescales of correlation functions can be encoded as quantum Ruelle–Pollicott (RP) resonances. They can arise as the leading eigenvalues of a propagator truncated to short-ranged operators, with the insight that short-ranged operators govern local thermalization. In this work, we extend RP resonances to the relaxation of...
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