Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Astrakharchik, Grigory"'
We derive universal relations between thermodynamic quantities and the pair distribution function for bosons interacting via power-law interactions in three and two dimensions. We find beyond mean-field expressions for Tan's contact and establish new
Externí odkaz:
http://arxiv.org/abs/2407.06419
A feasible experimental proposal to realize a non-dispersive quantum pendulum is presented. The proposed setup consists of an ultracold atomic cloud, featuring attractive interatomic interactions, loaded into a tilted ring potential. The classical an
Externí odkaz:
http://arxiv.org/abs/2312.15290
Publikováno v:
J. S\'anchez-Baena, L. A. Pe\~na Ardila, G. E. Astrakharchik, and F. Mazzanti, Phys. Rev. A 110, 023317 (2024)
We study the quasiparticle properties of a dipolar impurity immersed in a two-dimensional dipolar bath. We use the ab-initio Diffusion Monte Carlo technique to determine the polaron energy, effective mass and quasiparticle residue. We find that both
Externí odkaz:
http://arxiv.org/abs/2305.19846
Autor:
Kottmann, Korbinian, Haller, Andreas, Acín, Antonio, Astrakharchik, Grigory E., Lewenstein, Maciej
Publikováno v:
Phys. Rev. B 104, 174514, 2021
Recent studies have suggested a new phase in the extended Bose-Hubbard model in one dimension at integer filling [1,2]. In this work, we show that this new phase is phase-separated into a supersolid and superfluid part, generated by mechanical instab
Externí odkaz:
http://arxiv.org/abs/2106.05893
Autor:
Astrakharchik, Grigory E., Krutitsky, Konstantin V., Lewenstein, Maciej, Mazzanti, Ferran, Boronat, Jordi
Publikováno v:
Phys. Rev. A 96, 033606 (2017)
We study the superfluid response, the energetic and structural properties of a one-dimensional ultracold Bose gas in an optical lattice of arbitrary strength. We use the Bose-Fermi mapping in the limit of infinitely large repulsive interaction and th
Externí odkaz:
http://arxiv.org/abs/1612.07690
Publikováno v:
Phys. Rev. A 93, 021605 (2016)
One-dimensional Bose gas with contact interaction in optical lattices at zero temperature is investigated by means of the exact diffusion Monte Carlo algorithm. The results obtained from the fundamental continuous model are compared with those obtain
Externí odkaz:
http://arxiv.org/abs/1509.01424
Autor:
Zhao, Bo, Chen, Zeng-Bing, Pan, Jian-Wei, Schmiedmayer, J., Recati, Alessio, Astrakharchik, Grigory E., Calarco, Tommaso
Publikováno v:
Phys. Rev. A 75, 042312 (2007)
Deterministic entanglement of neutral cold atoms can be achieved by combining several already available techniques like the creation/dissociation of neutral diatomic molecules, manipulating atoms with micro fabricated structures (atom chips) and dete
Externí odkaz:
http://arxiv.org/abs/quant-ph/0502011
Akademický článek
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Autor:
Astrakharchik, Grigory E.1 grigori.astrakharchik@upc.edu, Ardila, Luis A. Peña2, Schmidt, Richard3,4, Jachymski, Krzysztof5,6, Negretti, Antonio7
Publikováno v:
Communications Physics. 5/11/2021, Vol. 4 Issue 1, p1-8. 8p.
Akademický článek
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