Colloquium: Quantum and classical discrete time crystals
The spontaneous breaking of time-translation symmetry has led to the discovery of a new
phase of matter: the discrete time crystal. Discrete time crystals exhibit rigid subharmonic …
phase of matter: the discrete time crystal. Discrete time crystals exhibit rigid subharmonic …
Quantum many-body scars and Hilbert space fragmentation: a review of exact results
The discovery of quantum many-body scars (QMBS) both in Rydberg atom simulators and in
the Affleck–Kennedy–Lieb–Tasaki spin-1 chain model, have shown that a weak violation of …
the Affleck–Kennedy–Lieb–Tasaki spin-1 chain model, have shown that a weak violation of …
Quantum many-body scars and weak breaking of ergodicity
Thermalization is the inevitable fate of many complex quantum systems, whose dynamics
allow them to fully explore the vast configuration space regardless of the initial state—the …
allow them to fully explore the vast configuration space regardless of the initial state—the …
Many-body localization in the age of classical computing
Statistical mechanics provides a framework for describing the physics of large, complex
many-body systems using only a few macroscopic parameters to determine the state of the …
many-body systems using only a few macroscopic parameters to determine the state of the …
Exploring the regime of fragmentation in strongly tilted Fermi-Hubbard chains
Intriguingly, quantum many-body systems may defy thermalization even without disorder.
One example is so-called fragmented models, where the many-body Hilbert space …
One example is so-called fragmented models, where the many-body Hilbert space …
Observation of Stark many-body localization without disorder
Thermalization is a ubiquitous process of statistical physics, in which a physical system
reaches an equilibrium state that is defined by a few global properties such as temperature …
reaches an equilibrium state that is defined by a few global properties such as temperature …
Observation of many-body scarring in a Bose-Hubbard quantum simulator
The ongoing quest for understanding nonequilibrium dynamics of complex quantum
systems underpins the foundation of statistical physics as well as the development of …
systems underpins the foundation of statistical physics as well as the development of …
Challenges to observation of many-body localization
We study time dynamics of 1D disordered Heisenberg spin-1/2 chains focusing on a regime
of large system sizes and a long-time evolution. This regime is relevant for observation of …
of large system sizes and a long-time evolution. This regime is relevant for observation of …
Emergence of fluctuating hydrodynamics in chaotic quantum systems
A fundamental principle of chaotic quantum dynamics is that local subsystems eventually
approach a thermal equilibrium state. The corresponding timescales increase with …
approach a thermal equilibrium state. The corresponding timescales increase with …
Observing emergent hydrodynamics in a long-range quantum magnet
Identifying universal properties of nonequilibrium quantum states is a major challenge in
modern physics. A fascinating prediction is that classical hydrodynamics emerges …
modern physics. A fascinating prediction is that classical hydrodynamics emerges …