The boson-fermion model is studied within the mean-field approximation including Pauli principle effects in the boson energy renormalization and Coulomb short-range repulsion among fermions and bosons. It is shown that there is a finite critical temperature at which Cooper pairing occurs accompanied by the divergence of the renormalized boson propagator at q = 0 and w = 0. The chemical potential, the entropy and the specific heat are also discussed. (C) 1998 Elsevier Science B.V. All rights reserved.
The boson-fermion model in the mean-field approximation / Piegari, E.; Cataudella, Vittorio; Iadonisi, G.. - In: PHYSICA. C, SUPERCONDUCTIVITY. - ISSN 0921-4534. - STAMPA. - 303:(1998), pp. 273-286. [10.1016/S0921-4534(98)00237-8]
The boson-fermion model in the mean-field approximation
E. Piegari;CATAUDELLA, VITTORIO;
1998
Abstract
The boson-fermion model is studied within the mean-field approximation including Pauli principle effects in the boson energy renormalization and Coulomb short-range repulsion among fermions and bosons. It is shown that there is a finite critical temperature at which Cooper pairing occurs accompanied by the divergence of the renormalized boson propagator at q = 0 and w = 0. The chemical potential, the entropy and the specific heat are also discussed. (C) 1998 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
