9 citations · 15 across the 3 of their papers we have counts for
9 papers
Quantum Phase Transition of Many Interacting Spins Coupled to a Bosonic Bath: static and dynamical properties
G. De Filippis, A. de Candia, A. S. Mishchenko +7
By using worldline and diagrammatic quantum Monte Carlo techniques, matrix product state and a variational approach à la Feynman, we investigate the equilibrium properties and rela…
Optimal energy conversion through anti-adiabatic driving breaking time-reversal symmetry
Loris Maria Cangemi, Matteo Carrega, Antonio De Candia +4
Starting with Carnot engine, the ideal efficiency of a heat engine has been associated with quasi-static transformations and vanishingly small output power. Here, we exactly calcul…
Violation of TUR in a periodically driven work-to-work converter from weak to strong dissipation
Loris Maria Cangemi, Vittorio Cataudella, Giuliano Benenti +2
We study a model of isothermal steady-state work-to-work converter, where a single quantum two-level system (TLS) driven by time-dependent periodic external fields acts as the work…
Quantum Phase Transitions in the Spin-Boson model: MonteCarlo Method vs Variational Approach a la Feynman
G. De Filippis, A. de Candia, L. M. Cangemi +3
The effectiveness of the variational approach a la Feynman is proved in the spin-boson model, i.e. the simplest realization of the Caldeira-Leggett model able to reveal the quantum…
Dissipative dynamics of a driven qubit: interplay between non-adiabatic dynamics and noise effects from weak to strong coupling regime
L. M. Cangemi, V. Cataudella, M. Sassetti +1
We study the exact solution of the Schrödinger equation for the dissipative dynamics of a qubit, achieved by means of Short Iterative Lanczos method (SIL), which allows us to descr…
Topological phase transition in quantum spin Hall insulator in the presence of charge lattice coupling
L. M. Cangemi, A. S. Mishchenko, N. Nagaosa +2
By using the cluster perturbation theory, we investigate the effects of the local electron-phonon interaction in the quantum spin Hall topological insulator described by the half-f…