We investigate the low-temperature critical properties of a classical Ising model in a transverse field. This is performed by applying the conventional Wilson renormalization group to the related Ginzburg-Landau functional emerging from a Hubbard-Stratonovich transformation. Results in 4-e dimensions provide a low temperature critical scenario very similar to that found for the quantum counperpart.The discrimination between the two cases lies on the different values of the shift exponent which characterizes the behaviour of the phase boundary close to the zero-temperature critical point.
Quantum-like criticality for a classical transverse Ising model in 4-e dimensions / CARAMICO D'AURIA, Alvaro; L., De Cesare; M. T., Mercaldo; I., Rabuffo. - In: THE EUROPEAN PHYSICAL JOURNAL. B, CONDENSED MATTER PHYSICS. - ISSN 1434-6028. - STAMPA. - 77:(2010), pp. 419-427. [10.1140/epjb/e2010-00294-y]
Quantum-like criticality for a classical transverse Ising model in 4-e dimensions
CARAMICO D'AURIA, ALVARO;
2010
Abstract
We investigate the low-temperature critical properties of a classical Ising model in a transverse field. This is performed by applying the conventional Wilson renormalization group to the related Ginzburg-Landau functional emerging from a Hubbard-Stratonovich transformation. Results in 4-e dimensions provide a low temperature critical scenario very similar to that found for the quantum counperpart.The discrimination between the two cases lies on the different values of the shift exponent which characterizes the behaviour of the phase boundary close to the zero-temperature critical point.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
