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Quantum phase transition with a simple variational ansatz
dc.contributor.author | Lutsyshyn, Yaroslav |
dc.contributor.author | Astrakharchik, Grigori |
dc.contributor.author | Cazorla, C |
dc.contributor.author | Boronat Medico, Jordi |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física i Enginyeria Nuclear |
dc.date.accessioned | 2015-01-19T15:23:44Z |
dc.date.available | 2015-01-19T15:23:44Z |
dc.date.created | 2014-12-11 |
dc.date.issued | 2014-12-11 |
dc.identifier.citation | Lutsyshyn, 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.issn | 1098-0121 |
dc.identifier.uri | http://hdl.handle.net/2117/25919 |
dc.description.abstract | We 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.extent | 5 p. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Física |
dc.subject.lcsh | Solid helium |
dc.subject.lcsh | Helium |
dc.subject.other | Shadow wave-function |
dc.subject.other | Ground-state |
dc.subject.other | Solid He-4 |
dc.subject.other | Monte-Carlo |
dc.subject.other | Bulk He-4 |
dc.subject.other | Liquid |
dc.subject.other | Helium |
dc.subject.other | Supersolidity |
dc.subject.other | Potentials |
dc.subject.other | Systems |
dc.title | Quantum phase transition with a simple variational ansatz |
dc.type | Article |
dc.subject.lemac | Heli |
dc.contributor.group | Universitat Politècnica de Catalunya. SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity |
dc.identifier.doi | 10.1103/PhysRevB.90.214512 |
dc.relation.publisherversion | http://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.214512 |
dc.rights.access | Open Access |
local.identifier.drac | 15389112 |
dc.description.version | Postprint (published version) |
local.citation.author | Lutsyshyn, Y.; Astrakharchik, G.; Cazorla, C.; Boronat, J. |
local.citation.publicationName | Physical review B: condensed matter and materials physics |
local.citation.volume | 90 |
local.citation.number | 21 |
local.citation.startingPage | 1 |
local.citation.endingPage | 5 |
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