- Tytuł:
- Phase Transitions in Optical Lattices at Finite Temperatures
- Autorzy:
-
Polak, T.
Kopeć, T. - Powiązania:
- https://bibliotekanauki.pl/articles/1810621.pdf
- Data publikacji:
- 2009-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
05.30.Jp
03.75.Lm
03.75.Nt
67.40.Kh - Opis:
- We discuss the finite-temperature phase diagram in three-dimensional Bose-Hubbard model relevant for the Bose-Einstein condensates in optical lattices, by employing U(1) quantum rotor approach and the topologically constrained path integral, that includes a summation over U(1) topological charge. The effective action formalism allows us to formulate a problem in the phase only action and obtain analytical formulae for the critical lines beyond mean-field theory.
- Źródło:
-
Acta Physica Polonica A; 2009, 115, 1; 418-420
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł