Dilute dipolar quantum droplets beyond the extended Gross-Pitaevskii equation

Autor: Fabian Böttcher, Matthias Wenzel, Jan-Niklas Schmidt, Mingyang Guo, Tim Langen, Igor Ferrier-Barbut, Tilman Pfau, Raúl Bombín, Joan Sánchez-Baena, Jordi Boronat, Ferran Mazzanti

Publikováno v: Physical Review Research, Vol 1, Iss 3, p 033088 (2019)

Dipolar quantum droplets are exotic quantum objects that are self-bound due to the subtle balance of attraction, repulsion, and quantum correlations. Here we present a systematic study of the critical atom number of these self-bound droplets, compari

Externí odkaz: https://doaj.org/article/b878e300620945428be8719bd8cd22f9

Weighted Contrastive Divergence

Autor: Merino, Enrique Romero, Castrillejo, Ferran Mazzanti, Pin, Jordi Delgado, Prats, David Buchaca

Learning algorithms for energy based Boltzmann architectures that rely on gradient descent are in general computationally prohibitive, typically due to the exponential number of terms involved in computing the partition function. In this way one has

Externí odkaz: http://arxiv.org/abs/1801.02567

Universal properties of anisotropic dipolar bosons in two dimensions

Autor: Juan Sánchez-Baena, Luisllu Peña Ardila, Gregory Astrakharchik, Ferran Mazzanti

Publikováno v: Sánchez-Baena, J, Ardila, L A P, Astrakharchik, G E & Mazzanti, F 2022, ' Universal properties of anisotropic dipolar bosons in two dimensions ', SciPost Physics, vol. 13, no. 2, 031 . https://doi.org/10.21468/SciPostPhys.13.2.031
SciPost Physics 13 (2022), Nr. 2
SciPost Physics

The energy of ultra-dilute quantum many-body systems is known to exhibit a universal dependence on the gas parameter x=n a_0^dx=na0d, with nn the density, dd the dimensionality of the space (d=1,2,3d=1,2,3) and a_0a0 the ss-wave scattering length. Th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0989775e56d34250909f09f70ea7a525
https://hdl.handle.net/2117/375693

Reply to 'comment on 'Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes' '

Autor: Jordi Boronat, Ferran Mazzanti, Raúl Bombín

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
Digital.CSIC. Repositorio Institucional del CSIC
instname

This is a Reply to the Comment from F. Cinti and M. Boninsegni on our recent work on the Berezinskii-Kosterlitz-Thouless (BKT) phase transition in a two-dimensional dipolar system [Bombín, Mazzanti, and Boronat, Phys. Rev. A 100, 063614 (2019)]. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3d1f3e4ff25058235db0263d977b17d
http://hdl.handle.net/2117/336817

Supersolid Striped Droplets in a Raman Spin-Orbit-Coupled System

Autor: Ferran Mazzanti, Jordi Boronat, J. Sánchez-Baena

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

We analyze the role played by quantum fluctuations on a Raman Spin-Orbit Coupled system in the stripe phase. We show that beyond mean-field effects stabilize the collapse predicted by mean-field theory and induce the emergence of two phases: a gas an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c066ee64da6d7c4352829f827ac8e6c