The Jaynes–Cummings Model (JCM) has recently been receiving increased attention as
one of the simplest, yet intricately nonlinear, models of quantum physics. Emphasising the …

This article presents a review of recent developments on various aspects of the quantum
Rabi model. Particular emphasis is given on the exact analytic solution obtained in terms of …

We investigate the quantum-chaotic properties of the Dicke Hamiltonian; a quantum-optical
model that describes a single-mode bosonic field interacting with an ensemble of N two …

A semiclassical approach is presented that allows us to extend the usual Van Vleck–
Gutzwiller formulation to the description of nonadiabatic quantum dynamics on coupled …

We consider a system composed of a two-level system (ie, a qubit) and a harmonic oscillator
in the ultrastrong-coupling regime, where the coupling strength is comparable to the qubit …

A theoretical formulation is outlined that allows us to extend the semiclassical Van Vleck–
Gutzwiller formulation to the description of nonadiabatic quantum dynamics on coupled …

Manifestation of chaotic behavior is found in an intrinsically quantum property. The
entanglement process, quantitatively expressed in terms of the reduced density linear …

II. Molecular Systems A. Model Hamiltonian B. Observables of Interest C. Model Systems 1.
Model I: S2→ S1 Internal Conversion in Pyrazine 2. Model II: eC→ eB→ eX Internal …

In recent years there have been significant advances in the study of many-body interactions
between atoms and light confined to optical cavities. One model that has received …

Non-integrability is often taken as a prerequisite for quantum thermalization. Still, a generally
accepted definition of quantum integrability is lacking. With the basis in the driven Rabi …