,

Static properties of a system of Bose hard rods in one-dimension,

Proceedings of the Fourteenth International Conference, edited J. Boronat, G. E. Astrakharchik and F. Mazzanti (World Scientific, Singapore) 116 (2008) [journal][abstract]

*We study the groundstate properties of a system of Bose Hard Rods of length a in one dimension by means of a Monte Carlo simulation. Since the analytical expression of the ground state wavefunction is known, the result of the calculation is exact. We discuss the behaviour of the static structure factor S(k), the pair distribution function g(z) and the momentum distribution n(k), and compare them to existing asymptotic expansions valid for Luttinger liquids at large distances.6 The analysis of S(k) reveals that two completely different regimes exist, characteristic of a solid-like (high density) and a gas-like (low density) phases. Furthermore, exact analytical values for S(k) at the momenta kj = 2πnj/a with n the density and j an integer, are derived. The one-body density matrix presents a power-law decay at large distances that turns into a divergent behaviour in n(k → 0) for densities lower than a critical value , thus stressing the presence of a Bose quasi-condensate.*

.bib
@ARTICLE{FMazzant-Stati-2008,

author = {F. Mazzanti and G.E. Astrakharchik and J.Boronat and J. Casulleras},

title = {Static properties of a system of Bose hard rods in one-dimension},

journal = {Proceedings of the Fourteenth International Conference, edited J. Boronat, G. E. Astrakharchik and F. Mazzanti (World Scientific, Singapore)},

pages = {116},

year = {2008}

}

CVN
*AUTORES/AS (p.o. de firma)*: F. Mazzanti, G.E. Astrakharchik, J.Boronat, and J. Casulleras

*TITULO*: Static properties of a system of Bose hard rods in one-dimension

*REF REVISTA/LIBRO*: Proceedings of the Fourteenth International Conference, edited J. Boronat, G. E. Astrakharchik and F. Mazzanti (World Scientific, Singapore) , 116

*CLAVE*: A

*FECHA PUBLICACION (*)*: 2008