3 papers
quant-ph2025
Open quantum systems and the grand canonical ensemble
Benedikt M. Reible, Luigi Delle Site
The celebrated Lindblad equation governs the non-unitary time evolution of density operators used in the description of open quantum systems. It is usually derived from the von Neu…
math-ph2024
Dynamics of systems with varying number of particles: from Liouville equations to general master equations for open systems
Mauricio J. del Razo, Luigi Delle Site
A varying number of particles is one of the most relevant characteristics of systems of interest in nature and technology, ranging from the exchange of energy and matter with the s…
cond-mat.stat-mech2024
Computationally feasible bounds for the free energy of nonequilibrium steady states, applied to simple models of heat conduction
Luigi Delle Site, Carsten Hartmann
In this paper we study computationally feasible bounds for relative free energies between two many-particle systems. Specifically, we consider systems out of equilibrium that do no…