Zobrazeno 1 - 10
of 588
pro vyhledávání: '"A Recati"'
Autor:
Alhyder, Ragheed, Colussi, Victor E., Čufar, Matija, Brand, Joachim, Recati, Alessio, Bruun, Georg M.
We develop a new theoretical framework for exploring a mobile impurity interacting strongly with a highly correlated bath of bosons in the quantum critical regime of a Mott insulator (MI) to superfluid (SF) quantum phase transition. Our framework is
Externí odkaz:
http://arxiv.org/abs/2412.07597
Autor:
Berti, Anna, Fernandes, Lennart, Butera, Salvatore Giulio, Recati, Alessio, Wouters, Michiel, Carusotto, Iacopo
We theoretically study stimulated and spontaneous Hawking emission from an analog horizon for spin modes in a two-component Bose-Einstein condensate, both with and without a coherent coupling between the two components. We highlight the conceptual an
Externí odkaz:
http://arxiv.org/abs/2408.17292
We investigate the Doppler effect at zero temperature in superfluids with broken Galilean invariance and hosting permanent currents, with special focus on atomic gas platforms. We consider the case when Galilean invariance is broken explicitly (by an
Externí odkaz:
http://arxiv.org/abs/2408.16489
Autor:
Recati, Alessio, Stringari, Sandro
Publikováno v:
Nat. Rev. Phys. 5, 735 (2023)
Can a gas behave like a crystal? Supersolidity is an intriguing and challenging state of matter which combines key features of superfluids and crystals. Predicted a long time ago, its experimental realization has been recently achieved in Bose-Einste
Externí odkaz:
http://arxiv.org/abs/2405.09537
Publikováno v:
Phys. Rev. Research 6, L012052 (2024)
Quantum Fisher information (QFI) is a central concept in quantum sciences used to quantify the ultimate precision limit of parameter estimation, detect quantum phase transitions, witness genuine multipartite entanglement, or probe nonlocality. Despit
Externí odkaz:
http://arxiv.org/abs/2311.12596
Publikováno v:
Phys. Rev. Lett. 132, 146001 (2024)
We propose a protocol to excite the Goldstone modes of a supersolid dipolar Bose-Einstein condensed gas confined in a ring geometry. By abruptly removing an applied periodic modulation proportional to cos($\varphi$), where $\varphi$ is the azimuthal
Externí odkaz:
http://arxiv.org/abs/2308.05981
Autor:
Zenesini, Alessandro, Berti, Anna, Cominotti, Riccardo, Rogora, Chiara, Moss, Ian G., Billam, Thomas P., Carusotto, Iacopo, Lamporesi, Giacomo, Recati, Alessio, Ferrari, Gabriele
Publikováno v:
Nat. Phys. 20, 558 (2024)
In quantum field theory, the decay of an extended metastable state into the real ground state is known as ``false vacuum decay'' and it takes place via the nucleation of spatially localized bubbles. Despite the large theoretical effort to estimate th
Externí odkaz:
http://arxiv.org/abs/2305.05225
Publikováno v:
Phys. Rev. A 107, 043301 (2023)
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:
http://arxiv.org/abs/2212.12253
Autor:
Cominotti, Riccardo, Berti, Anna, Dulin, Clement, Rogora, Chiara, Lamporesi, Giacomo, Carusotto, Iacopo, Recati, Alessio, Zenesini, Alessandro, Ferrari, Gabriele
Publikováno v:
Phys. Rev. X 13, 021037 (2023)
Ferromagnetism is an iconic example of a first-order phase transition taking place in spatially extended systems and is characterized by hysteresis and the formation of domain walls. In this paper we demonstrate that an extended atomic superfluid in
Externí odkaz:
http://arxiv.org/abs/2209.13235
Publikováno v:
Phys. Rev. Lett. 130, 220403 (2023)
Close to the demixing transition, the degree of freedom associated to relative density fluctuations of a two-component Bose-Einstein condensate is described by a non-dissipative Landau-Lifshitz equation. In the quasi one-dimensional weakly immiscible
Externí odkaz:
http://arxiv.org/abs/2209.11536