Artículo
Abstract:
We extend our earlier fluid-dynamical description of fermion superfluids incorporating the particle energy flow together with the equation of motion for the internal kinetic energy of the pairs. The formal scheme combines a set of equations similar to those of classical hydrodynamics with the equations of motion for the anomalous density and for its related momentum density and kinetic energy density. This dynamical frame represents a second order truncation of an infinite hierarchy of equations of motion isomorphic to the full time dependent Hartree-Fock-Bogoliubov equations in coordinate representation. We analyze the equilibrium solutions and fluctuations for a homogeneous, unpolarized fermion system of two species, and show that the collective spectrum presents the well-known Anderson-Bogoliubov low energy mode of homogeneous superfluids and a pairing vibration near the gap energy. © 2010 Springer Science+Business Media, LLC.
Registro:
| Documento: | Artículo |
| Título: | Extended fluid-dynamics and collective motion of two trapped fermion species with pairing interactions |
| Autor: | Hernández, E.S.; Capuzzi, P.; Szybisz, L. |
| Filiación: | Departamento de Física, Universidad de Buenos Aires, Consejo Nacional, de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina Comisión Nacional de Energía Atómica, Buenos Aires, Argentina |
| Palabras clave: | Collective spectrum; Fermion superfluids; Gapped mode; Andersons; Anomalous densities; Bogoliubov; Collective motions; Collective spectrum; Coordinate representations; Equation of motion; Equilibrium solutions; Fermion systems; Gap energy; Gapped mode; Hartree-fock; Hierarchy of equations; Kinetic energy density; Low energies; Momentum density; Pairing interactions; Particle energy; Second orders; Time dependent; Electron energy loss spectroscopy; Fluids; Kinetic energy; Open channel flow; Quantum chemistry; Vibration analysis; Equations of motion |
| Año: | 2011 |
| Volumen: | 162 |
| Número: | 3-4 |
| Página de inicio: | 274 |
| Página de fin: | 280 |
| DOI: | http://dx.doi.org/10.1007/s10909-010-0230-3 |
| Título revista: | Journal of Low Temperature Physics |
| Título revista abreviado: | J. Low Temp. Phys. |
| ISSN: | 00222291 |
| CODEN: | JLTPA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222291_v162_n3-4_p274_Hernandez |
Referencias:
- Anderson, P.W., (1958) Phys. Rev., 112, p. 1900. , 10.1103/PhysRev.112.1900 101138 1958PhRv.112.1900A
- Bogoliubov, N.N., (1958) Soviet Phys. JETP, 34, p. 41. , 99227
- Vollhardt, D., Wölfle, P., (1990) The Superfluid Phases of Helium, 3. , Taylor and Francis London
- Capuzzi, P., Hernández, E.S., Szybisz, L., (2008) Phys. Rev. A, 78, p. 043619. , 10.1103/PhysRevA.78.043619 2008PhRvA.78d3619C
- Hernández, E.S., (2010) J. Low Temp. Phys., , submitted
- Wong, C.Y., Maruhn, J.A., Welton, T.A., (1975) Nucl. Phys. A, 253, p. 469. , 10.1016/0375-9474(75)90493-5 1975NuPhA.253.469W
- Papenbrock, T., Bertsch, G.F., (1999) Phys. Rev. C, 59, p. 2052. , 10.1103/PhysRevC.59.2052 1999PhRvC.59.2052P
Citas:
---------- APA ----------
Hernández, E.S., Capuzzi, P. & Szybisz, L. (2011) . Extended fluid-dynamics and collective motion of two trapped fermion species with pairing interactions. Journal of Low Temperature Physics, 162(3-4), 274-280.http://dx.doi.org/10.1007/s10909-010-0230-3
---------- CHICAGO ----------
Hernández, E.S., Capuzzi, P., Szybisz, L. "Extended fluid-dynamics and collective motion of two trapped fermion species with pairing interactions" . Journal of Low Temperature Physics 162, no. 3-4 (2011) : 274-280.http://dx.doi.org/10.1007/s10909-010-0230-3
---------- MLA ----------
Hernández, E.S., Capuzzi, P., Szybisz, L. "Extended fluid-dynamics and collective motion of two trapped fermion species with pairing interactions" . Journal of Low Temperature Physics, vol. 162, no. 3-4, 2011, pp. 274-280.http://dx.doi.org/10.1007/s10909-010-0230-3
---------- VANCOUVER ----------
Hernández, E.S., Capuzzi, P., Szybisz, L. Extended fluid-dynamics and collective motion of two trapped fermion species with pairing interactions. J. Low Temp. Phys. 2011;162(3-4):274-280.http://dx.doi.org/10.1007/s10909-010-0230-3
