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Scaling properties of work fluctuations after quenches at quantum transitions
Davide Nigro, Davide Rossini, Ettore Vicari
We study the scaling properties of the statistics of the work done on a generic many-body system at a quantum phase transition of any order and type, arising from quenches of a dri…
Decoherence dynamics of qubits coupled to systems at quantum transitions
Ettore Vicari
We study the decoherence properties of a two-level (qubit) system homogeneously coupled to an environmental many-body system at a quantum transition, considering both continuous an…
Ground-state fidelity at first-order quantum transitions
Davide Rossini, Ettore Vicari
We analyze the scaling behavior of the fidelity, and the corresponding susceptibility, emerging in finite-size many-body systems whenever a given control parameter is varied ac…
Finite-size scaling at first-order quantum transitions when boundary conditions favor one of the two phases
Andrea Pelissetto, Davide Rossini, Ettore Vicari
We investigate scaling phenomena at first-order quantum transitions, when the boundary conditions favor one of the two phases. We show that the corresponding finite-size scaling be…
Anomalous finite-size scaling at thermal first-order transitions in systems with disordered boundary conditions
Haralambos Panagopoulos, Andrea Pelissetto, Ettore Vicari
We investigate the equilibrium and off-equilibrium behaviors of systems at thermal first-order transitions (FOTs) when the boundary conditions favor one of the two phases. As a the…
Dynamic finite-size scaling after a quench at quantum transitions
Andrea Pelissetto, Davide Rossini, Ettore Vicari
We present a general dynamic finite-size scaling theory for the quantum dynamics after an abrupt quench, at both continuous and first-order quantum transitions. For continuous tran…