Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
BCS-BEC crossover and nodal points contribution in p-wave resonance superfluids
Репозиторій DSpace/Manakin
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BCS-BEC crossover and nodal points contribution in p-wave resonance superfluids
Тема:
Электронные свойства проводящих систем
Інший ID:
PACS: 67.30.H–, 67.85.Lm, 74.20.Rp
Посилання:
BCS-BEC crossover and nodal points contribution in p-wave resonance superfluids / M.Yu. Kagan, D.V. Efremov // Физика низких температур. — 2009. — Т. 35, № 8-9. — С. 779-788. — Бібліогр.: 20 назв. — англ.
Підтримка:
The authors acknowledge interesting and useful discussion
with A.S. Alexandrov, A.F. Andreev, D.M. Lee,
I.A. Fomin, Yu. Kagan, G.V. Shlyapnikov, V.V. Val’kov,
G.E. Volovik, L.P. Pitaevskii, W. Ketterle, V. Gurarie, W.
Halperin and are grateful to RFBR (grant # 08-02-00224)
for financial support of this work.
Дата:
2009
Переглядів:
770
Завантажень:
558
Анотація:
We solve the Leggett equations for BCS–BEC crossover of the resonance p-wave superfluid. We calculate sound velocity, specific heat and the normal density for the BCS-domain (μ > 0), BEC-domain (μ < 0) as well as for the interesting interpolation point (μ = 0) in the triplet A₁-phase in 3D. We are especially interested in the quasiparticle contribution coming from the zeroes of the superfluid gap in the A1-phase. We discuss the spectrum of orbital waves and the superfluid hydrodynamics at temperature T → 0. In this context we elucidate the difficult problem of chiral anomaly and mass-current nonconcervation appearing in the BCS-domain. We present the different approaches to solve this problem. To clarify this problem experimentally we propose an experiment for the measurement of anomalous current in superfluid A1-phase in the presence of aerogel for ³He and in the presence of Josephson tunneling structures for the ultracold gases in magnetic traps.
