Thermodynamic irreversibility is well characterized by the entropy production arising from
non-equilibrium quantum processes. We show that the entropy production of a quantum …

The quantum localization is one of the remarkable phenomena in the studies of quantum
chaos and plays an important role in various contexts. Thus, an understanding of the …

Employing efficient diagonalization techniques, we perform a detailed quantitative study of
the regular and chaotic regions in phase space in the simplest nonintegrable atom-field …

We study phase space properties of critical, parity symmetric, N-qudit systems undergoing a
quantum phase transition (QPT) in the thermodynamic N→∞ limit. The D= 3 level (qutrit) …

We present a phase-space study of first-, second-and third-order quantum phase transitions
in the Lipkin–Meshkov–Glick model by means of the Husimi function. By analyzing the …

It is shown that there is a linear relation between the relative Rényi entropy and the density
functional fidelity susceptibility. The derivative of the relative Rényi entropy with respect to …

Quantifying the degree of irreversibility of an open system dynamics represents a problem of
both fundamental and applied relevance. Even though a well-known framework exists for …

In this paper we study the entanglement in symmetric N-quDit systems. In particular we use
generalizations to U (D) of spin U (2) coherent states (CSs) and their projections on definite …

We propose a method to identify the order of a quantum phase transition by using area
measures of the ground state in phase space. We illustrate our proposal by analyzing the …

The interaction of a quantized electromagnetic field in a cavity with a set of two-level atoms
inside it can be described with algebraic Hamiltonians of increasing complexity, from the …