53 citations · 133 across the 6 of their papers we have counts for
7 papers
The resonating valence bond wave functions in quantum antiferromagnets
Alberto Parola, Sandro Sorella, Federico Becca +1
Projected-BCS wave functions have been proposed as the paradigm for the understanding of disordered spin states (spin liquids). Here we investigate the properties of these wave fun…
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…
Low temperature broken symmetry phases of spiral antiferromagnets
Luca Capriotti, Subir Sachdev
We study Heisenberg antiferromagnets with nearest- (J1) and third- (J3) neighbor exchange on the square lattice. In the limit of large spin S, there is a zero temperature (T) Lifsh…
Ising transition in the two-dimensional quantum Heisenberg model
Luca Capriotti, Tommaso Roscilde, Andrea Fubini +1
We study the thermodynamics of the spin- two-dimensional quantum Heisenberg antiferromagnet on the square lattice with nearest () and next-nearest () neighbor coupling…
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…
Projected BCS Wave Functions for Low Dimensional Frustrated Spin Systems
Luca Capriotti, Federico Becca, Alberto Parola +1
Twenty-five years after the first proposal, the question whether the ground state of a frustrated spin-half system is well described by a spin-liquid Resonating Valence Bond (RVB)…