Cold fermions with pairing interactions: New results based on fluiddynamical descriptions

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We present a rigorous derivation of the moment hierarchy of the density and pair density matrices of a two species fermion superfluid in coordinate representation. We discuss the tools to truncate at any desired level and present the derivation of the Extended Superfluid Thomas-Fermi (ESTF) fluiddyn...

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Detalles Bibliográficos
Autores principales: Capuzzi, P., Hernández, E.S., Szybisz, L.
Formato: JOUR
Materias:
Collective spectrum
Fermion superfluid
Moment hierarchy
Low temperature engineering
Low temperature phenomena
Physics
Coordinate representations
Equation of state
Equilibrium profiles
Numerical results
Pairing interactions
Random phase approximations
Equations of state
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00222291_v166_n5-6_p242_Capuzzi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:We present a rigorous derivation of the moment hierarchy of the density and pair density matrices of a two species fermion superfluid in coordinate representation. We discuss the tools to truncate at any desired level and present the derivation of the Extended Superfluid Thomas-Fermi (ESTF) fluiddynamical scheme. In order to establish the equation of state in equilibrium to be incorporated in the truncation, we extend the method of Papenbrock and Bertsch. We examine the dynamics of fluctuations in homogeneous fermion matter and show that it is consistent with the ordinary Random-Phase-approximation. We discuss some numerical results for equilibrium profiles and collective fluctuations of trapped cold gases. © Springer Science+Business Media, LLC 2011.

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