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dc.contributor.authorLutsyshyn, Yaroslav
dc.contributor.authorAstrakharchik, Grigori
dc.contributor.authorCazorla, C
dc.contributor.authorBoronat Medico, Jordi
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear
dc.date.accessioned2015-01-19T15:23:44Z
dc.date.available2015-01-19T15:23:44Z
dc.date.created2014-12-11
dc.date.issued2014-12-11
dc.identifier.citationLutsyshyn, Y. [et al.]. Quantum phase transition with a simple variational ansatz. "Physical review B: condensed matter and materials physics", 11 Desembre 2014, vol. 90, núm. 21, p. 1-5.
dc.identifier.issn1098-0121
dc.identifier.urihttp://hdl.handle.net/2117/25919
dc.description.abstractWe study the zero-temperature quantum phase transition between liquid and hcp solid He-4. We use the variational method with a simple yet exchange-symmetric and fully explicit wave function. It is found that the optimized wave function undergoes spontaneous symmetry breaking and describes the quantum solidification of helium at 22 atm. The explicit form of the wave function allows us to consider various contributions to the phase transition. We find that the employed wave function is an excellent candidate for describing both a first-order quantum phase transition and the ground state of a Bose solid.
dc.format.extent5 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshSolid helium
dc.subject.lcshHelium
dc.subject.otherShadow wave-function
dc.subject.otherGround-state
dc.subject.otherSolid He-4
dc.subject.otherMonte-Carlo
dc.subject.otherBulk He-4
dc.subject.otherLiquid
dc.subject.otherHelium
dc.subject.otherSupersolidity
dc.subject.otherPotentials
dc.subject.otherSystems
dc.titleQuantum phase transition with a simple variational ansatz
dc.typeArticle
dc.subject.lemacHeli
dc.contributor.groupUniversitat Politècnica de Catalunya. SIMCON - Grup de Recerca de Simulació per Ordinador en Matèria Condensada
dc.identifier.doi10.1103/PhysRevB.90.214512
dc.relation.publisherversionhttp://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.214512
dc.rights.accessOpen Access
drac.iddocument15389112
dc.description.versionPostprint (published version)
upcommons.citation.authorLutsyshyn, Y.; Astrakharchik, G.; Cazorla, C.; Boronat, J.
upcommons.citation.publishedtrue
upcommons.citation.publicationNamePhysical review B: condensed matter and materials physics
upcommons.citation.volume90
upcommons.citation.number21
upcommons.citation.startingPage1
upcommons.citation.endingPage5
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