964 citations · 2.1k across the 42 of their papers we have counts for
42 papers
Restoration of Ensemble Equivalence by Quantum Fluctuations
Alessandro Campa, Andrea Trombettoni
We study the thermodynamic phase diagram of a one-dimensional quantum spin chain subjected to both mean-field and nearest-neighbor interactions, and to a transverse magnetic field…
Phase diagram of the one-dimensional three-state Potts model with an additional mean-field interaction
Alessandro Campa, Vahan Hovhannisyan, Stefano Ruffo +1
We derive the phase diagram of the one-dimensional three-state Potts model with an additional mean-field interaction in the canonical ensemble. The free energy is obtained by mappi…
Ensemble Inequivalence in Ising Chains with Competing Interactions
Alessandro Campa, Vahan Hovhannisyan, Stefano Ruffo +1
We study the effect of competing interactions on ensemble inequivalence. We consider a one-dimensional Ising model with ferromagnetic mean-field interactions and short-range neares…
Synchronization in a System of Kuramoto Oscillators with Distributed Gaussian Noise
Alessandro Campa, Shamik Gupta
We consider a system of globally-coupled phase-only oscillators with distributed intrinsic frequencies and evolving in presence of distributed Gaussian, white noise, namely, a Gaus…
Relaxation dynamics in a long-range system with mixed Hamiltonian and non-Hamiltonian interactions
Alessandro Campa, Shamik Gupta
Sometimes the dynamics of a physical system is described by non-Hamiltonian equations of motion, and additionally, the system is characterized by long-range interactions. A concret…
The study of the dynamics of the order parameter of coupled oscillators in the Ott-Antonsen scheme for generic frequency distributions
Alessandro Campa
The Ott-Antonsen ansatz shows that, for certain classes of distribution of the natural frequencies in systems of globally coupled Kuramoto oscillators, the dynamics of the orde…