Quantum phase transition in a two-dimensional system of dipoles

Simple item page
dc.creatorAstrakharchik, G. E.
dc.creatorBoronat, J.
dc.creatorKurbakov, I. L.
dc.creatorLozovik, Yu. E.
dc.date2006-08-10
dc.date2007-02-20
dc.date.accessioned2026-07-07T07:47:25Z
dc.date.available2026-07-07T07:47:25Z
dc.descriptionThe ground-state phase diagram of a two-dimensional Bose system with dipole-dipole interactions is studied by means of quantum Monte Carlo technique. Our calculation predicts a quantum phase transition from gas to solid phase when the density increases. In the gas phase the condensate fraction is calculated as a function of the density. Using Feynman approximation, the collective excitation branch is studied and appearance of a roton minimum is observed. Results of the static structure factor at both sides of the gas-solid phase are also presented. The Lindeman ratio at the transition point comes to be $γ= 0.230(6)$. The condensate fraction in the gas phase is estimated as a function of the density.
dc.description4 figures v.3 One citation added, updated Fig.4. Minor changes following referee's and editor's comments
dc.identifierhttps://arxiv.org/abs/cond-mat/0608246
dc.identifierhttp://arxiv.org/abs/cond-mat/0608246
dc.identifierPhys. Rev. Lett. 98, 060405 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.060405
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/124162
dc.subjectSuperconductivity
dc.titleQuantum phase transition in a two-dimensional system of dipoles
dc.typetext

Files

Collections

arXiv