INVESTIGADORES
LOZANO Gustavo Sergio
artículos
Título:
Effects of dissipation on disordered quantum spin models
Autor/es:
LETICIA F CUGLIANDOLO; DANIEL GREMPEL; GUSTAVO S LOZANO; HOMERO LOZZA
Revista:
PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS
Editorial:
American Physical Society
Referencias:
Año: 2004 vol. B p. 24422 - 24422
ISSN:
0163-1829
Resumen:
We study the effects of the coupling to an Ohmic quantum reservoir on the
static and dynamical properties of a family of disordered SU(2) spin models in
a transverse magnetic field using a method of direct spin summation. The
tendency to form a glassy phase increases with the strength of the coupling of
the system to the environment. We study the influence of the environment on the
features of the phase diagram of the various models as well as the stability of
the possible phases.
