Effects of fermion-boson interaction in neutral atomic systems
| dc.creator | Yokoshi, Nobuhiko | |
| dc.creator | Kurihara, Susumu | |
| dc.date | 2003-04-05 | |
| dc.date | 2005-04-18 | |
| dc.date.accessioned | 2026-07-07T02:50:38Z | |
| dc.date.available | 2026-07-07T02:50:38Z | |
| dc.description | We investigate the collective excitations of $^3$He-$^4$He mixture films at zero temperature within random phase approximation and linear response theory. In low concentration region of $^3$He, a level repulsion between zero sound and third sound mode is derived, which opens the possibility to observe quantum mechanical coherence between $^3$He particle-hole pair and the condensate of $^4$He. We also investigate the $^3$He-$^4$He vertex corrections in ladder approximation and show that the third branch, the combined mode of fermionic particle-hole pair and the third sound quanta, provides a unique correction to Landau $f$ function. Some implications to the fermion-boson mixture of alkali atoms in a potential trap is discussed. | |
| dc.description | 5 page, 3 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0304128 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0304128 | |
| dc.identifier | Phys. Rev. B 68 064501 (2003) | |
| dc.identifier | doi:10.1103/PhysRevB.68.064501 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/21169 | |
| dc.subject | Statistical Mechanics | |
| dc.subject | Soft Condensed Matter | |
| dc.title | Effects of fermion-boson interaction in neutral atomic systems | |
| dc.type | text |