Finite-temperature spin dynamics of a two-dimensional Bose-Bose atomic mixture

Autor: Arko Roy, Miki Ota, Alessio Recati, Franco Dalfovo

Publikováno v: Physical Review Research, Vol 3, Iss 1, p 013161 (2021)

We examine the role of thermal fluctuations in uniform two-dimensional binary Bose mixtures of dilute ultracold atomic gases. We use a mean-field Hartree-Fock theory to derive analytical predictions for the miscible-immiscible transition. A nontrivia

Externí odkaz: https://doaj.org/article/5073a57fb3e6491eada7c8b4b9d05aba

Measurement of the order parameter and its spatial fluctuations across Bose-Einstein condensation

Autor: Dimitrios Trypogeorgos, Franco Dalfovo, Carmelo Mordini, Giacomo Lamporesi, Gabriele Ferrari, Alessandro Zenesini, Arturo Farolfi, Louise Wolswijk

Publikováno v: Physical review. A, Atomic, molecular, and optical physics (Online) 105 (2022): 033316-1–033316-10. doi:10.1103/PhysRevA.105.033316
info:cnr-pdr/source/autori:Wolswijk, Louise; Mordini, Carmelo; Farolfi, Arturo; Trypogeorgos, Dimitris; Dalfovo, Franco; Zenesini, Alessandro; Ferrari, Gabriele; Lamporesi, Giacomo/titolo:Measurement of the order parameter and its spatial fluctuations across Bose-Einstein condensation/doi:10.1103%2FPhysRevA.105.033316/rivista:Physical review. A, Atomic, molecular, and optical physics (Online)/anno:2022/pagina_da:033316-1/pagina_a:033316-10/intervallo_pagine:033316-1–033316-10/volume:105

We investigate the strong out-of-equilibrium dynamics occurring when a harmonically trapped ultracold bosonic gas is evaporatively cooled across the Bose--Einstein condensation transition. By imaging the cloud after free expansion, we study how the c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3a7aa2d23a3ef9558a6e6dfa99ad4b8
https://doi.org/10.1103/physreva.105.033316

Finite temperature ferromagnetic transition in coherently coupled Bose gases

Autor: Arko Roy, Miki Ota, Franco Dalfovo, Alessio Recati

A paramagnetic-ferromagnetic quantum phase transition is known to occur at zero temperature in a two-dimensional coherently-coupled Bose mixture of dilute ultracold atomic gases provided the interspecies interaction strength is large enough. Here we

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a32f0a95520e7bdabd055293522586d

Multiple period states of the superfluid Fermi gas in an optical lattice

Autor: Sukjin Yoon, Franco Dalfovo, Takashi Nakatsukasa, Gentaro Watanabe

Publikováno v: New Journal of Physics, Vol 18, Iss 2, p 023011 (2016)

We study multiple period states of a two-component unpolarized superfluid Fermi gas in an optical lattice along the Bardeen–Cooper–Schrieffer (BCS) to Bose–Einstein condensate (BEC) crossover. The existence of states whose period is a multiple

Externí odkaz: https://doaj.org/article/084be70d93934b6b975a9573e2db3de8

Dynamic structure factor of a strongly correlated Fermi superfluid within a density functional theory approach

Autor: Peng Zou, Franco Dalfovo, Rishi Sharma, Xia-Ji Liu, Hui Hu

Publikováno v: New Journal of Physics, Vol 18, Iss 11, p 113044 (2016)

We theoretically investigate the dynamic structure factor of a strongly interacting Fermi gas at the crossover from Bardeen–Cooper–Schrieffer superfluids to Bose–Einstein condensates, by developing an improved random phase approximation within

Externí odkaz: https://doaj.org/article/48892483ee1e457894dbf63e4dfd4d72