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cond-mat.stat-mech2000★ 11 cited
Finite-temperature ordering in two-dimensional magnets
Alessandro Cuccoli, Valerio Tognetti, Tommaso Roscilde +2
We study the two dimensional quantum Heisenberg antiferromagnet on the square lattice with easy-axis exchange anisotropy. By the semiclassical method called pure-quantum self-consi…
cond-mat.stat-mech2000★ 1 cited
Effective potential approach to quantum dissipation in condensed matter systems
Alessandro Cuccoli, Andrea Fubini, Valerio Tognetti +1
The effects of dissipation on the thermodynamic properties of nonlinear quantum systems are approached by the path-integral method in order to construct approximate classical-like…