10 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…
Quantum corrections to the Josephson dynamics: a population-imbalance approach
Oliver Hideg, Sofia Salvatore, Luca Salasnich
We investigate quantum corrections to the Josephson dynamics of two weakly coupled Bose-Einstein condensates using the population imbalance as the sole dynamical variable. Starting…
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.…
Effective action approach to quantum and thermal effects: from one particle to Bose-Einstein condensates
Luca Salasnich
We present a detailed derivation of the quantum and quantum-thermal effective action for non-relativistic systems, starting from the single particle case and extending to the Gross…
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…