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Enrique Rico Ortega (CERN)11/05/2026, 08:50
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Giovanni Cataldi (Max Planck Institute of Quantum Optics)11/05/2026, 09:00
Non-Abelian lattice gauge theories provide a setting where local constraints reshape far-from-equilibrium quantum many-body dynamics and can obstruct thermalization.
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In a (1+1)D SU(2) lattice gauge theory with dynamical matter, three non-ergodic phenomena are identified, each with a different origin. In regimes where the gauge-invariant dynamics is otherwise ergodic, low-overhead... -
Dr Marco Rigobello (Max-Planck Quantum Optics)11/05/2026, 10:45
We introduce a model-independent method for preparing and detecting quasiparticle wavepackets in (quasi-)1D quantum many-body systems. We exploit maximally localized Wannier functions obtained from exact diagonalization to construct unitary quasiparticle creation operators. These can then be applied to larger systems, encoded using tensor networks or quantum simulators. Detection further...
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Dr Kiryl Pakrouski (ETH Zurich)11/05/2026, 14:00
Many-body scar subspaces decouple from the rest of the Hilbert space which protects the order present in scar states from thermalisation.
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I will discuss a form of general conditions leading to this phenomenon known as the Group Invariant formalism. As an example, I will show that the Yang’s eta-pairing states are many-body scars in many standard condensed matter models such as the 1-orbital... -
Stefan Floerchinger (University of Jena)12/05/2026, 09:00
Quantum excitations or quasiparticles in a material, like for example phonons in a Bose-Einstein
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condensate, or fermions in the vicinity of a Dirac point in materials like graphene, can be subject
to non-trivial spacetime geometries that differ from the Minkowski spacetime of the laboratory.
These geometries are determined by material properties like the speed of sound, fluid velocity,... -
Dr Tilman Enss (Heidelberg)12/05/2026, 10:45
Hydrodynamic attractors are a universal phenomenon of strongly
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interacting systems that describe an hydrodynamic-like evolution far
from local equilibrium. We describe how such behavior might be
observed in real time in ultracold atomic gases. Although ultracold
atomic gases are dilute, they have remarkable transport properties
exhibiting hydrodynamics and nearly perfect fluidity. We show... -
Sara Murciano12/05/2026, 14:00
Local measurements offer a powerful way to probe novel quantum phenomena, thermalization, and universal distributions in many-body quantum systems. In this talk, I will introduce the observable-projected ensemble, in which the subsystem state is conditioned on the outcome of measuring a single local Hermitian operator on part of its complement, rather than on a complete projective measurement...
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Julian Sonner (Universite de Geneve (CH))13/05/2026, 09:00
We develop a classical counterpart of the Krylov complexity framework by running the Lanczos algorithm directly on the algebra of observables of a Hamiltonian system on a compact symplectic manifold. This construction arises naturally as the semiclassical limit of the quantum Lanczos algorithm. We demonstrate the usefulness of classical Krylov complexity in characterisation early-time dynamics...
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Giuseppe Magnifico13/05/2026, 10:45
Gauge theories lie at the heart of our description of nature’s fundamental building blocks and their interactions, ranging from high-energy particle physics to emergent phenomena in low-temperature quantum matter. However, the complete characterization of their phase diagrams and the full understanding of non-perturbative effects remain open challenges, especially at finite charge density,...
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Raju Venugopalan (BNL and Univ. of Edinburgh)13/05/2026, 14:00
From a first principles QFT perspective, the problem of thermalization in heavy-ion collisions may appear to be intractable. However, at very high energies, a semi-classical "shockwave" description of ultrarelativistic nuclei (and their scattering) emerges, described by the Color Glass Condensate (CGC) EFT. We first discuss how such shockwaves form in QCD, and how they decay, and the rich...
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Michal Heller13/05/2026, 16:00
Nonthermal fixed points are paradigmatic far-from-equilibrium phenomena, relevant experimentally in cold atomic gases and theoretically in ultrarelativistic nuclear collisions and cosmology. I will show how insights from other areas, including holographic studies of thermalization, enable predictions of new features and phenomena associated with their self-similar time evolution.
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Debasish Banerjee (University of Southampton)14/05/2026, 09:00
While the widespread applicability of statistical mechanics indicates the ubiquitous
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occurrence of thermalization, guided by the Eigenstate Thermalization Hypothesis (ETH), there
are increasing examples of violations of the ETH paradigm; both for translational invariant and
disordered systems. In this talk, we will discuss various such examples occurring in pure U(1)
quantum link gauge... -
Alessio Lerose14/05/2026, 10:45
We introduce a rigorous framework to classify phases and phase transitions of interfaces separating ordered regions in 2D Ising-type quantum magnets --- or, equivalently, confining strings in the dual lattice gauge theories --- based on effective 1D fermionic Hamiltonians governing transversal quantum fluctuations. Building on the `holographic' approach from [Balducci et al., Phys. Rev. Lett....
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Gianluca Lagnese14/05/2026, 14:00
Confinement and false vacuum decay are cornerstone non-perturbative phenomena in quantum field theory. Both emerge when an explicit symmetry breaking field lifts the degeneracy of a vacuum. In this framework, confined states act as droplets of the "false" vacuum, while decay occurs through the nucleation of "true" vacuum bubbles via quantum tunneling. Recent breakthroughs in controllable...
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Laura Batini (ETH Zürich)15/05/2026, 09:00
Metastable states are ubiquitous in systems undergoing first-order transitions, where the decay proceeds via the nucleation of critical droplets. This phenomenon has attracted renewed interest driven by experiments with analog quantum simulators, which enable direct access to real-time nucleation dynamics.
Many of these platforms, trapped-ion Ising simulators, Rydberg-atom arrays with...
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Dr Bipasha Chakraborty (University of Southampton)15/05/2026, 10:45
Quantum computing provides a promising framework for simulating strongly coupled gauge theories relevant to high-energy physics. In this talk, I will discuss quantum simulations of lattice gauge theories, focusing on the Schwinger model implementing on higher than one spatial dimension. I will outline gauge-invariant encodings and circuit implementations suitable for near-term quantum...
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Joao C. Pinto Barros (Institute for Theoretical Physics, ETH Zurich)15/05/2026, 14:00
In the last few years, many instances of local Hamiltonians with abnormal thermalization properties have been found. These include models with Hilbert space fragmentation and quantum many-body scars. In an ideal scenario, we would like to characterize the conditions under which abnormal thermalization can occur and, if it does, predict its characteristics. In this talk, I will demonstrate how...
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