Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Ardila, Luis A. Peña"'
This review describes the field of Bose polarons, arising when mobile impurities are immersed into a bosonic quantum gas. The latter can be realized by a Bose-Einstein condensate (BEC) of ultracold atoms, or of exciton polaritons in a semiconductor,
Externí odkaz:
http://arxiv.org/abs/2410.09413
Publikováno v:
Phys. Rev. A 110, L011301 (2024)
Ionic Bose polarons are quantum entities emerging from the interaction between an ion and a Bose-Einstein condensate (BEC), featuring long-ranged interactions that can compete with the gas healing length. This can result in strong interparticle corre
Externí odkaz:
http://arxiv.org/abs/2404.11387
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
Publikováno v:
SciPost Phys. 15, 232 (2023)
We study the out-of-equilibrium quantum dynamics of dipolar polarons, i.e., impurities immersed in a dipolar Bose-Einstein condensate, after a quench of the impurity-boson interaction. We show that the dipolar nature of the condensate and of the impu
Externí odkaz:
http://arxiv.org/abs/2305.17969
Autor:
Bland, Thomas, Poli, Elena, Ardila, Luis A. Peña, Santos, Luis, Ferlaino, Francesca, Bisset, Russell N.
Publikováno v:
Phys. Rev. A 106, 053322 (2022)
Two-component dipolar condensates are now experimentally producible, and we theoretically investigate the nature of supersolidity in this system. We predict the existence of a binary supersolid state in which the two components form a series of alter
Externí odkaz:
http://arxiv.org/abs/2203.11119
Publikováno v:
Phys. Rev. Lett. 127, 033401 (2021)
We investigate the problem of an infinitely heavy impurity interacting with a dilute Bose gas at zero temperature. When the impurity-boson interactions are short ranged, we show that boson-boson interactions induce a quantum blockade effect, where a
Externí odkaz:
http://arxiv.org/abs/2102.06368
We study the quantum dynamics of a single impurity following its sudden immersion into a Bose-Einstein condensate. The ensuing formation of the Bose polaron in this general setting can be seen as impurity decoherence driven by the condensate, which w
Externí odkaz:
http://arxiv.org/abs/1806.09933
Measuring the single-particle density matrix for fermions and hard-core bosons in an optical lattice
Publikováno v:
Phys. Rev. Lett. 121, 260401 (2018)
Ultracold atoms in optical lattices provide clean, tunable, and well-isolated realizations of paradigmatic quantum lattice models. With the recent advent of quantum-gas microscopes, they now also offer the possibility to measure the occupations of in
Externí odkaz:
http://arxiv.org/abs/1806.08171
Publikováno v:
Phys. Rev. B.84, 094119 (2011)
The elastic constants of hcp $^{4}$He are computed using the path-integral Monte Carlo (PIMC) method. The stiffness coefficients are obtained by imposing different distortions to a periodic cell containing 180 atoms, followed by measurement of the el
Externí odkaz:
http://arxiv.org/abs/1609.03921
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