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Diffusion Monte Carlo methods for spin-orbit-coupled ultracold Bose gases

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Sánchez Baena, JuanMés informacióMés informació
Boronat Medico, JordiMés informacióMés informacióMés informació
Mazzanti Castrillejo, Fernando PabloMés informacióMés informacióMés informació
Document typeArticle
Defense date2018-11-27
PublisherAmerican Physical Society (APS)
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
We present two diffusion Monte Carlo (DMC) algorithms for systems of ultracold quantum gases featuring synthetic spin-orbit interactions. The first one is a spin-integrated DMC method which provides fixed-phase energy estimates. The second one is a discrete spin generalisation of the T-moves spin-orbit DMC [Melton et al., J. Chem. Phys. 144, 244113 (2016)], which provides an upper bound to the fixed-phase energy. The former is a more accurate method but it is restricted to spin-independent two-body interactions. We report a comparison between both algorithms for different systems. As a check of the efficiency of both methods, we compare the DMC energies with results obtained with other numerical methods, finding agreement between both estimations.
CitationSánchez, J., Boronat, J., Mazzanti, F. Diffusion Monte Carlo methods for spin-orbit-coupled ultracold Bose gases. "Physical review A", 27 Novembre 2018, vol. 98, núm. 5, p. 053632-1-053632-16. 
URIhttp://hdl.handle.net/2117/126326
DOI10.1103/PhysRevA.98.053632
ISSN2469-9926
Publisher versionhttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.98.053632
Other identifiershttps://arxiv.org/abs/1807.08123
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  • Departament de Física - Articles de revista [1.866]
  • SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity - Articles de revista [383]
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