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Out-of-equilibrium dynamics driven by localized time-dependent perturbations at quantum phase transitions
Andrea Pelissetto, Davide Rossini, Ettore Vicari
We investigate the quantum dynamics of many-body systems subject to local, i.e. restricted to a limited space region, time-dependent perturbations. If the perturbation drives the s…
Criticality of O(N) symmetric models in the presence of discrete gauge symmetries
Andrea Pelissetto, Antonio Tripodo, Ettore Vicari
We investigate the critical properties of the three-dimensional (3D) antiferromagnetic RP(N-1}) model, which is characterized by a global O(N) symmetry and a discrete Z_2 gauge sym…
Dynamic finite-size scaling at first-order transitions
Andrea Pelissetto, Ettore Vicari
We investigate the dynamic behavior of finite-size systems close to a first-order transition (FOT). We develop a dynamic finite-size scaling (DFSS) theory for the dynamic behavior…
Dimensional crossover of Bose-Einstein condensation phenomena in quantum gases confined within slab geometries
Francesco Delfino, Ettore Vicari
We investigate systems of interacting bosonic particles confined within slab-like boxes of size L^2 x Z with Z<<L, at their three-dimensional (3D) BEC transition temperature T_c, a…
Landau-Ginzburg-Wilson approach to critical phenomena in the presence of gauge symmetries
Andrea Pelissetto, Antonio Tripodo, Ettore Vicari
We critically reconsider the Landau-Ginzburg-Wilson (LGW) approach to critical phenomena in the presence of gauge symmetries. In the LGW framework, to obtain the universal features…
Critical behavior at the spatial boundary of a trapped inhomogeneous Bose-Einstein condensate
Francesco Delfino, Ettore Vicari
We investigate some aspects of the Bose-Einstein condensation (BEC) of quantum gases in the presence of inhomogeneous conditions. We consider three-dimensional (3D) quantum gases t…
Theta dependence in the large N limit
Claudio Bonati, Massimo D'Elia, Paolo Rossi +1
Studies of the large behaviour of the topological properties of gauge theories typically focused on the large scaling of the topological susceptibility. A much more difficu…