6 papers
Equilibrium and dynamical quantum phase transitions in dipolar atomic Josephson junctions
Cesare Vianello, Giovanni Mazzarella, Luca Salasnich
An atomic Josephson junction realized with dipolar bosons in a double-well potential can be described by an extended Bose-Hubbard model in which dipolar interactions generate an ef…
Quantum effective action for dissipative semiclassical dynamics
Cesare Vianello, Andrea Bardin, Luca Salasnich
Using the quantum effective action in the Schwinger-Keldysh formalism, we derive quantum corrections to the semiclassical Langevin dynamics of a dissipative system governed by a ma…
Dynamics of one-dimensional Bose-Josephson Junction in a Box Trap: From Coherent Oscillations to Many-Body Dephasing and Dynamical Freezing
Abhik Kumar Saha, L. F. Calazans de Brito, Rhombik Roy +4
Understanding how coherent quantum dynamics give way to correlation-dominated behavior in low-dimensional systems remains a central challenge in quantum many-body physics. Here, we…
Coherent-state path integrals in quantum thermodynamics
Luca Salasnich, Cesare Vianello
In these notes, we elucidate some subtle aspects of coherent-state path integrals, focusing on their application to the equilibrium thermodynamics of quantum many-particle systems.…
Finite-temperature entanglement and coherence in asymmetric bosonic Josephson junctions
Cesare Vianello, Matteo Ferraretto, Luca Salasnich
We investigate the finite-temperature properties of a bosonic Josephson junction composed of N interacting atoms confined by a quasi-one-dimensional asymmetric double-well potentia…
Quantum action of the Josephson dynamics
Cesare Vianello, Sofia Salvatore, Luca Salasnich
We study the beyond-mean-field Josephson dynamics of the relative phase between two coupled macroscopic quantum systems. Using a covariant background field method, we derive the on…