1.6k citations · 10.4k across the 262 of their papers we have counts for
10 papers · 1 filter
Out-of-equilibrium finite-size scaling in generalized Kibble-Zurek protocols crossing quantum phase transitions in the presence of symmetry-breaking perturbations
Francesca De Franco, Ettore Vicari
We study the effects of symmetry-breaking perturbations in the out-of-equilibrium quantum dynamics of many-body systems slowly driven across a continuous quantum transition (CQT) b…
Chiral critical behavior of 3D lattice fermionic models with quartic interactions
Claudio Bonati, Alessio Franchi, Andrea Pelissetto +1
We study the critical behavior of the three-dimensional (3D) Gross-Neveu (GN) model with Dirac fermionic flavors and quartic interactions, at the chiral trans…
Quantum critical behaviors and decoherence of weakly coupled quantum Ising models within an isolated global system
Alessio Franchi, Andrea Pelissetto, Ettore Vicari
We discuss the quantum dynamics of an isolated composite system consisting of weakly interacting many-body subsystems. We focus on one of the subsystems, S, and study the dependenc…
Out-of-equilibrium dynamics arising from slow round-trip variations of Hamiltonian parameters across quantum and classical critical points
Francesco Tarantelli, Ettore Vicari
We address the out-of-equilibrium dynamics of many-body systems subject to slow time-dependent round-trip protocols across quantum and classical (thermal) phase transitions. We con…
Decoherence and energy flow in the sunburst quantum Ising model
Alessio Franchi, Davide Rossini, Ettore Vicari
We study the post-quench unitary dynamics of a quantum sunburst spin model, composed of a transverse-field quantum Ising ring which is suddenly coupled to a set of independent exte…
Scalar gauge-Higgs models with discrete Abelian symmetry groups
Claudio Bonati, Andrea Pelissetto, Ettore Vicari
We investigate the phase diagram and the nature of the phase transitions of three-dimensional lattice gauge-Higgs models obtained by gauging the Z_N subgroup of the global Z_q inva…
Three-dimensional monopole-free CP models: Behavior in the presence of a quartic potential
Claudio Bonati, Andrea Pelissetto, Ettore Vicari
We investigate the phase diagram and the nature of the phase transitions in a three-dimensional model characterized by a global SU() symmetry, a local U(1) symmetry, and the abs…
Quantum many-body spin rings coupled to ancillary spins: The sunburst quantum Ising model
Alessio Franchi, Davide Rossini, Ettore Vicari
We study the ground-state properties of a quantum "sunburst model", composed of a quantum Ising spin-ring in a transverse field, symmetrically coupled to a set of ancillary isolate…
Critical behaviors of lattice U(1) gauge models and three-dimensional Abelian-Higgs gauge field theory
Claudio Bonati, Andrea Pelissetto, Ettore Vicari
We investigate under which conditions the three-dimensional (3D) multicomponent Abelian-Higgs (AH) field theory (scalar electrodynamics) is the continuum limit of statistical latti…
Critical crossover phenomena driven by symmetry-breaking defects at quantum transitions
Alessio Franchi, Davide Rossini, Ettore Vicari
We study the effects of symmetry-breaking defects at continuous quantum transitions (CQTs), which may arise from localized external fields coupled to the order-parameter operator.…