122 citations · 289 across the 9 of their papers we have counts for
8 papers · 1 filter
Extracting signatures of quantum criticality in the finite-temperature behavior of many-body systems
Alessandro Cuccoli, Alessio Taiti, Ruggero Vaia +1
We face the problem of detecting and featuring footprints of quantum criticality in the finite-temperature behavior of quantum many-body systems. Our strategy is that of comparing…
Steady states of the conserved Kuramoto-Sivashinsky equation
Paolo Politi, Ruggero Vaia
Recent work on the dynamics of a crystal surface [T.Frisch and A.Verga, Phys. Rev. Lett. 96, 166104 (2006)] has focused the attention on the conserved Kuramoto-Sivashinsky (CKS) eq…
Dissipation-driven phase transition in 2D Josephson arrays
Luca Capriotti, Alessandro Cuccoli, Andrea Fubini +2
We analyze the interplay of dissipative and quantum effects in the proximity of a quantum phase transition. The prototypical system is a resistively shunted two-dimensional Josephs…
Detection of XY behaviour in weakly anisotropic quantum antiferromagnets on the square lattice
Alessandro Cuccoli, Tommaso Roscilde, Ruggero Vaia +1
We consider the Heisenberg antiferromagnet on the square lattice with S=1/2 and very weak easy-plane exchange anisotropy; by means of the quantum Monte Carlo method, based on the c…
Quantum 2D Heisenberg antiferromagnet: bridging the gap between field-theoretical and semiclassical approaches
Bernard B. Beard, Alessandro Cuccoli, Ruggero Vaia +1
The field-theoretical result for the low- behaviour of the correlation length of the quantum Heisenberg antiferromagnet on the square lattice was recently improved by Hasenfratz…
Path integral Monte Carlo for dissipative many-body systems
Luca Capriotti, Alessandro Cuccoli, Andrea Fubini +2
We address the possibility of performing numerical Monte Carlo simulations for the thermodynamics of quantum dissipative systems. Dissipation is considered within the Caldeira-Legg…