Superfluid Thomas - Fermi approximation for trapped fermi gases

Autores
Hernndez, S.; <div class="autor_fcen" id="1474">Capuzzi, P.</div>; <div class="autor_fcen" id="8429">Szybisz, L.</div>
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
Versión publicada
Descripción
We present a generalization of fermionic fluiddynamics to the case of two trapped fermion species with a contact interaction. Within a mean field approximation, we derive coupled equations of motion for the particle densities, particle currents, and anomalous pair density. For an inhomogeneous system, the equilibrium situation with vanishing currents is described by a generalized Thomas-Fermi relation that includes the superfluid gap, together with a new nonlocal gap equation that replaces the usual BCS one. These equations are numericaly solved resorting to a local density approximation (LDA). Density and gap profiles are analyzed in terms of the scattering length, revealing that the current frame can exhibit microscopic details of quantum origin that are frequently absent in more macroscopic scenarios. © 2009 IOP Publishing Ltd.
Fil:Capuzzi, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Szybisz, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
J. Phys. Conf. Ser. 2009;150(3)
Materia
Contact interaction
Coupled equation
Current frame
Gap equations
Gap profiles
Inhomogeneous system
Mean field approximation
Nonlocal
Pair density
Particle currents
Particle densities
Scattering length
Superfluid gap
Thomas-Fermi
Thomas-Fermi approximation
Trapped fermi gas
Electron gas
Equations of motion
Fermions
Nivel de accesibilidad
Acceso abierto
Licencia
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
snrd:HASH08443bdba984b9d98c5d58