High-temperature superfluidity with abnormal fermionic occupancy

We examine a Lipkin based two-level pairing model at finite temperature and in the thermodynamic limit. Whereas at T=0 the model exhibits a superconducting ground state for sufficiently high values of the coupling constant, a partially superconducting phase in whichsome of the particles are paired,...

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Detalles Bibliográficos
Autores principales: Aguilera Navarro, V. C., Llano, M. de, Plastino, Ángel Luis, Rossignoli, Raúl Dante
Formato: Articulo
Lenguaje:Inglés
Publicado: 1991
Materias:
Física
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/145005
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-145005
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
spellingShingle Física
Aguilera Navarro, V. C.
Llano, M. de
Plastino, Ángel Luis
Rossignoli, Raúl Dante
High-temperature superfluidity with abnormal fermionic occupancy
topic_facet Física
description We examine a Lipkin based two-level pairing model at finite temperature and in the thermodynamic limit. Whereas at T=0 the model exhibits a superconducting ground state for sufficiently high values of the coupling constant, a partially superconducting phase in whichsome of the particles are paired, is found to survive at high temperatures in a special treatment. This phase is a mixture of “abnormally-occupied” eigenstates, which lie at higher energy, of the interactionless model Hamiltonian.
format Articulo
Articulo
author Aguilera Navarro, V. C.
Llano, M. de
Plastino, Ángel Luis
Rossignoli, Raúl Dante
author_facet Aguilera Navarro, V. C.
Llano, M. de
Plastino, Ángel Luis
Rossignoli, Raúl Dante
author_sort Aguilera Navarro, V. C.
title High-temperature superfluidity with abnormal fermionic occupancy
title_short High-temperature superfluidity with abnormal fermionic occupancy
title_full High-temperature superfluidity with abnormal fermionic occupancy
title_fullStr High-temperature superfluidity with abnormal fermionic occupancy
title_full_unstemmed High-temperature superfluidity with abnormal fermionic occupancy
title_sort high-temperature superfluidity with abnormal fermionic occupancy
publishDate 1991
url http://sedici.unlp.edu.ar/handle/10915/145005
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AT rossignolirauldante hightemperaturesuperfluiditywithabnormalfermionicoccupancy
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