Beyond lowest order mean-field theory for light interacting with atom arrays

F Robicheaux, DA Suresh - Physical Review A, 2021 - APS
Results from higher order mean-field calculations of light interacting with atom arrays are
presented for calculations of one-and two-time expectation values. The atoms are …

A generalized phase space approach for solving quantum spin dynamics

B Zhu, AM Rey, J Schachenmayer - New Journal of Physics, 2019 - iopscience.iop.org
Numerical techniques to efficiently model out-of-equilibrium dynamics in interacting
quantum many-body systems are key for advancing our capability to harness and …

Exact local correlations in kicked chains

B Gutkin, P Braun, M Akila, D Waltner, T Guhr - Physical Review B, 2020 - APS
We show that local correlators in a wide class of kicked chains can be calculated exactly at
light-cone edges. Extending previous works on circuit lattice systems, the correlators …

Realistic simulations of spin squeezing and cooperative coupling effects in large ensembles of interacting two-level systems

J Huber, AM Rey, P Rabl - Physical Review A, 2022 - APS
We describe an efficient numerical method for simulating the dynamics of interacting spin
ensembles in the presence of dephasing and decay. The method builds on the discrete …

Driven-dissipative criticality within the discrete truncated Wigner approximation

VP Singh, H Weimer - Physical Review Letters, 2022 - APS
We present an approach to the numerical simulation of open quantum many-body systems
based on the semiclassical framework of the discrete truncated Wigner approximation. We …

Hybrid discrete-continuous truncated Wigner approximation for driven, dissipative spin systems

CD Mink, D Petrosyan, M Fleischhauer - Physical Review Research, 2022 - APS
We present a systematic approach for the semiclassical treatment of many-body dynamics of
interacting, open spin systems. Our approach overcomes some of the shortcomings of the …

Transition from quantum chaos to localization in spin chains

P Braun, D Waltner, M Akila, B Gutkin, T Guhr - Physical Review E, 2020 - APS
Recent years have seen an increasing interest in quantum chaos and related aspects of
spatially extended systems, such as spin chains. However, the results are strongly system …

Discrete truncated Wigner approach to dynamical phase transitions in Ising models after a quantum quench

R Khasseh, A Russomanno, M Schmitt, M Heyl… - Physical Review B, 2020 - APS
By means of the discrete truncated Wigner approximation, we study dynamical phase
transitions arising in the steady state of transverse-field Ising models after a quantum …

Cluster truncated Wigner approximation for bond-disordered Heisenberg spin models

A Braemer, J Vahedi, M Gärttner - Physical Review B, 2024 - APS
We present a comprehensive numerical investigation of the cluster truncated Wigner
approximation (cTWA) applied to quench dynamics in bond-disordered Heisenberg spin …

Performance evaluation of the discrete truncated Wigner approximation for quench dynamics of quantum spin systems with long-range interactions

M Kunimi, K Nagao, S Goto, I Danshita - Physical Review Research, 2021 - APS
The discrete truncated Wigner approximation (DTWA) is a powerful tool for analyzing
dynamics of quantum spin systems. Since the DTWA includes the leading-order quantum …