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Low-dimensional weakly interacting Bose gases: nonuniversal equations of state

Autor
Astrakharchik, G.; Boronat, J.; Kurbakov, I. L.; Lozovik, Y.; Mazzanti, F.
Tipus d'activitat
Article en revista
Revista
Physical review A
Data de publicació
2010-01
Volum
81
Número
1
Pàgina inicial
3612
Pàgina final
3622
DOI
https://doi.org/10.1103/PhysRevA.81.013612 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/7792 Obrir en finestra nova
URL
http://pra.aps.org/pdf/PRA/v81/i1/e013612 Obrir en finestra nova
Resum
The zero-temperature equation of state is analyzed in low-dimensional bosonic systems. We propose to use the concept of energy-dependent s-wave scattering length for obtaining estimations of nonuniversal terms in the energy expansion. We test this approach by making a comparison to exactly solvable one-dimensional problems and find that the generated terms have the correct structure. The applicability to two-dimensional systems is analyzed by comparing with results of Monte Carlo simulations. T...
Citació
Astrakharchik, G. [et al.]. Low-dimensional weakly interacting Bose gases: nonuniversal equations of state. "Physical review A", Gener 2010, vol. 81, núm. 1, p. 3612-3622.
Grup de recerca
SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity

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