Zobrazeno 1 - 10
of 338
pro vyhledávání: '"L Salasnich"'
Publikováno v:
New Journal of Physics, Vol 26, Iss 1, p 013021 (2024)
We investigate the role of quantum fluctuations in the dynamics of a bosonic Josephson junction in D spatial dimensions, by using beyond-mean-field Gaussian corrections. We derive some key dynamical properties in a systematic way for $D = 3, 2, 1$ .
Externí odkaz:
https://doaj.org/article/d084b08e39c74d4c9ed4176d3b567307
Publikováno v:
New Journal of Physics, Vol 23, Iss 4, p 043043 (2021)
We theoretically investigate sound modes in a weakly-interacting collisional Bose gas in D dimensions. Using the Landau’s two-fluid hydrodynamics and working within the Bogoliubov theory, we observe the hybridization of the first and second sound m
Externí odkaz:
https://doaj.org/article/1451792a793e4c58be8522662b7a0860
Publikováno v:
New Journal of Physics, Vol 22, Iss 7, p 073020 (2020)
We study the quantum tunneling of two one-dimensional quasi-condensates made of alkali-metal atoms, considering two different tunneling configurations: side-by-side and head-to-tail. After deriving the quasiparticle excitation spectrum, we discuss th
Externí odkaz:
https://doaj.org/article/0dba1954f62a4ad3a66c59f288009413
Publikováno v:
New Journal of Physics, Vol 20, Iss 12, p 125007 (2018)
We investigate an ultracold and dilute Bose gas by taking into account a finite-range two-body interaction. The coupling constants of the resulting Lagrangian density are related to measurable scattering parameters by following the effective-field-th
Externí odkaz:
https://doaj.org/article/01c05b7abaff4fea9ec6e2719e5cd44e
Publikováno v:
New Journal of Physics, Vol 20, Iss 4, p 045001 (2018)
Quantum dynamics of impurities in a bath of bosons is a long-standing problem in solid-state, plasma, and atomic physics. Recent experimental and theoretical investigations with ultracold atoms have focused on this problem, studying atomic impurities
Externí odkaz:
https://doaj.org/article/4071643665d247c2ae5045d8d5015aee
Autor:
V Penna, L Salasnich
Publikováno v:
New Journal of Physics, Vol 19, Iss 4, p 043018 (2017)
We study a two-dimensional fermionic cloud of repulsive alkali-metal atoms characterized by two hyperfine states which are Rabi coupled. Within a variational Hartree–Fock scheme, we calculate analytically the ground-state energy of the system. Then
Externí odkaz:
https://doaj.org/article/3118daa12fcc4ede8b37a1a3ca7f46cb
Publikováno v:
New Journal of Physics, Vol 18, Iss 5, p 055007 (2016)
We study the dynamics of quantum bosonic waves in a one-dimensional tilted optical lattice. An effective spatially localized nonlinear two-body potential barrier is set at the center of the lattice. This version of the Bose–Hubbard model can be rea
Externí odkaz:
https://doaj.org/article/51db39de8a51480095d598058d1d250d
We investigate the scattering theory of two particles in a generic $D$-dimensional space. For the s-wave problem, by adopting an on-shell approximation for the $T$-matrix equation, we derive analytical formulas which connect the Fourier transform ${\
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::251bed93f3e4a63878fbee1d34d4b71d
https://hdl.handle.net/11577/3480265
https://hdl.handle.net/11577/3480265
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Akademický článek
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