Quantum and classical Lyapunov exponents in atom-field interaction systems

J Chávez-Carlos, B López-del-Carpio… - Physical review …, 2019‏ - APS
The exponential growth of the out-of-time-ordered correlator (OTOC) has been proposed as
a quantum signature of classical chaos. The growth rate is expected to coincide with the …

Positive quantum Lyapunov exponents in experimental systems with a regular classical limit

S Pilatowsky-Cameo, J Chávez-Carlos… - Physical Review E, 2020‏ - APS
Quantum chaos refers to signatures of classical chaos found in the quantum domain.
Recently, it has become common to equate the exponential behavior of out-of-time order …

Self-ordered limit cycles, chaos, and phase slippage with a superfluid inside an optical resonator

F Piazza, H Ritsch - Physical review letters, 2015‏ - APS
We study dynamical phases of a driven Bose-Einstein condensate coupled to the light field
of a high-Q optical cavity. For high field seeking atoms at red detuning the system is known …

Ubiquitous quantum scarring does not prevent ergodicity

S Pilatowsky-Cameo, D Villaseñor… - Nature …, 2021‏ - nature.com
In a classically chaotic system that is ergodic, any trajectory will be arbitrarily close to any
point of the available phase space after a long time, filling it uniformly. Using Born's rules to …

Chaos and thermalization in the spin-boson Dicke model

D Villaseñor, S Pilatowsky-Cameo… - Entropy, 2022‏ - mdpi.com
We present a detailed analysis of the connection between chaos and the onset of
thermalization in the spin-boson Dicke model. This system has a well-defined classical limit …

Dynamical signatures of quantum chaos and relaxation time scales in a spin-boson system

S Lerma-Hernández, D Villaseñor… - Physical Review E, 2019‏ - APS
Quantum systems whose classical counterparts are chaotic typically have highly correlated
eigenvalues and level statistics that coincide with those from ensembles of full random …

Classical chaos in atom-field systems

J Chávez-Carlos, MA Bastarrachea-Magnani… - Physical Review E, 2016‏ - APS
The relation between the onset of chaos and critical phenomena, like quantum phase
transitions (QPTs) and excited-state quantum phase transitions (ESQPTs), is analyzed for …

Mixed eigenstates in the Dicke model: Statistics and power-law decay of the relative proportion in the semiclassical limit

Q Wang, M Robnik - Physical Review E, 2024‏ - APS
How the mixed eigenstates vary when approaching the semiclassical limit in mixed-type
many-body quantum systems is an interesting but still less known question. Here, we …

Chaos in the three-site Bose-Hubbard model: Classical versus quantum

G Nakerst, M Haque - Physical Review E, 2023‏ - APS
We consider a quantum many-body system—the Bose-Hubbard system on three sites—
which has a classical limit, and which is neither strongly chaotic nor integrable but rather …

Quantum vs classical dynamics in a spin-boson system: manifestations of spectral correlations and scarring

D Villasenor, S Pilatowsky-Cameo… - New Journal of …, 2020‏ - iopscience.iop.org
We compare the entire classical and quantum evolutions of the Dicke model in its regular
and chaotic domains. This is a paradigmatic interacting spin-boson model of great …