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Ferromagnetic transition of a two-component Fermi gas of hard spheres

Autor
Arias , F.; Mazzanti, F.; Boronat, J.; Polls, A.
Tipus d'activitat
Article en revista
Revista
Physical review A
Data de publicació
2012-03-12
Volum
85
Número
3
Pàgina inicial
1
Pàgina final
6
DOI
https://doi.org/10.1103/PhysRevA.85.033615 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/16422 Obrir en finestra nova
URL
http://pra.aps.org/abstract/PRA/v85/i3/e033615 Obrir en finestra nova
Resum
We use microscopic many-body theory to analyze the problem of itinerant ferromagnetism in a repulsive atomic Fermi gas of hard spheres. Using simple arguments we show that the available theoretical predictions for the onset of the ferromagnetic transition predict a transition point at a density (kF a ∼ 1) that is too large to be compatible with the universal low-density expansion of the energy. We present variational calculations for the hard-sphere Fermi gas, in the framework of Fermi hyperne...
Citació
Arias , F. [et al.]. Ferromagnetic transition of a two-component Fermi gas of hard spheres. "Physical review A", 12 Març 2012, vol. 85, núm. 3, p. 1-6.
Paraules clau
ENERGY, GROUND-STATE, HELIUM, LIQUID-HE-3
Grup de recerca
SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity

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