The reaction-field approximation is applied to the d-dimensional q-state quantum Potts model in an external transverse field. With the exception of d<or approximately=3, the tricritical value qc(d), below which the system has a second-order phase transition, decreases with increasing external field strength. From the ground state of the quantum d-dimensional model, an improved value of qc is obtained for the classical model in d+1 dimensions. A direct explanation is also obtained for the expected tricritical point in finite-thickness slabs of cubic ferromagnets (like DyAl2) with a field in the (111) direction
A conjecture, based on a comparison of different mean-field-like approximations, is proposed for det...
We study the quantum tricriticality of d dimensional transverse Ising like systems by means of a re...
We study the quantum tricriticality of d dimensional transverse Ising like systems by means of a re...
The reaction-field approximation is applied to the d-dimensional q-state quantum Potts model in an e...
The reaction-field approximation is applied to the d-dimensional q-state quantum Potts model in an e...
It is shown how Onsager’s reaction field may be incorporated in mean-field-like calculations for the...
It is shown how Onsager's reaction field may be incorporated in mean-field-like calculations for the...
It is shown how Onsager's reaction field may be incorporated in mean-field-like calculations for the...
We investigate the critical behavior of the three-dimensional, three-state Potts model in presence o...
We investigate the critical behavior of the three-dimensional, three-state Potts model in presence o...
We investigate the critical behaviour of the three-dimensional, three state Potts model in presence...
The q-state Potts model in two dimensions exhibits a first-order transition for q>4. As q->4+ ...
A one-dimensional quantum formulation of the two-dimensional q-state Potts model is studied using a ...
Karsch F, Stickan S. The three-dimensional, three-state Potts model in an external field. PHYSICS LE...
Abstract. An analysis is presented of the phase transition of the quantum Ising model with transvers...
A conjecture, based on a comparison of different mean-field-like approximations, is proposed for det...
We study the quantum tricriticality of d dimensional transverse Ising like systems by means of a re...
We study the quantum tricriticality of d dimensional transverse Ising like systems by means of a re...
The reaction-field approximation is applied to the d-dimensional q-state quantum Potts model in an e...
The reaction-field approximation is applied to the d-dimensional q-state quantum Potts model in an e...
It is shown how Onsager’s reaction field may be incorporated in mean-field-like calculations for the...
It is shown how Onsager's reaction field may be incorporated in mean-field-like calculations for the...
It is shown how Onsager's reaction field may be incorporated in mean-field-like calculations for the...
We investigate the critical behavior of the three-dimensional, three-state Potts model in presence o...
We investigate the critical behavior of the three-dimensional, three-state Potts model in presence o...
We investigate the critical behaviour of the three-dimensional, three state Potts model in presence...
The q-state Potts model in two dimensions exhibits a first-order transition for q>4. As q->4+ ...
A one-dimensional quantum formulation of the two-dimensional q-state Potts model is studied using a ...
Karsch F, Stickan S. The three-dimensional, three-state Potts model in an external field. PHYSICS LE...
Abstract. An analysis is presented of the phase transition of the quantum Ising model with transvers...
A conjecture, based on a comparison of different mean-field-like approximations, is proposed for det...
We study the quantum tricriticality of d dimensional transverse Ising like systems by means of a re...
We study the quantum tricriticality of d dimensional transverse Ising like systems by means of a re...