Periodic Ultranarrow Rods as 1D Subwavelength Optical Lattices
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Low Temperature Physics"
DOI: 10.1007/s10909-019-02276-6
Abstract: We report on ground-state properties of a one-dimensional, weakly interacting Bose gas constrained by an infinite multi-rod periodic structure at zero temperature. We solve the stationary Gross–Pitaevskii equation (GPE) to obtain the Bloch wave functions… read more here.
Keywords: subwavelength optical; bose gas; ultranarrow rods; periodic ultranarrow ... See more keywords
Universal dynamics in an isolated one-dimensional Bose gas far from equilibrium
Sign Up to like & getrecommendations! Published in 2018 at "Nature"
DOI: 10.1038/s41586-018-0667-0
Abstract: Understanding the behaviour of isolated quantum systems far from equilibrium and their equilibration is one of the most pressing problems in quantum many-body physics1,2. There is strong theoretical evidence that sufficiently far from equilibrium a… read more here.
Keywords: bose gas; one dimensional; far equilibrium; time ... See more keywords
On the response function of a degenerate Bose gas
Sign Up to like & getrecommendations! Published in 2019 at "Low Temperature Physics"
DOI: 10.1063/1.5097368
Abstract: The space-time density-density response function for degenerate ideal Bose gas is considered. On this basis, it is shown that upon exposure to a weak external field, a space-time wave of average non-uniform density fluctuation is… read more here.
Keywords: time; gas; density; bose gas ... See more keywords
State engineering of impurities in a lattice by coupling to a Bose gas
Sign Up to like & getrecommendations! Published in 2018 at "New Journal of Physics"
DOI: 10.1088/1367-2630/aae98f
Abstract: We investigate the localization pattern of interacting impurities, which are trapped in a lattice potential and couple to a Bose gas. For small interspecies interaction strengths, the impurities populate the energetically lowest Bloch state or… read more here.
Keywords: bose gas; state engineering; gas;
Ideal Bose gas and blackbody radiation in the Dunkl formalism
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Statistical Mechanics: Theory and Experiment"
DOI: 10.1088/1742-5468/acd106
Abstract: Recently, deformed quantum systems have received lots of attention in the literature. Dunkl formalism differs from others by containing the difference-differential and reflection operator. It is one of the most interesting deformations since it let… read more here.
Keywords: dunkl formalism; formalism; blackbody radiation; bose gas ... See more keywords
Interaction-induced single-impurity tunneling in a binary mixture of trapped ultracold bosons
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.100.043616
Abstract: We investigate the tunneling dynamics of a an impurity species which is trapped in a finite lattice and interacts repulsively with a Bose gas. We initially prepare our binary mixture in its ground state such… read more here.
Keywords: bose gas; binary mixture; interaction; single impurity ... See more keywords
Bound-state band reconstruction and resonance in a spin-1/2 Bose gas with one-dimensional spin-orbit coupling
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.101.023609
Abstract: In this work, we study two-body bound states in two-component Bose gas with a one-dimensional (1D) spin-orbit coupling (SOC) induced by Raman lasers. The finite Raman coupling strength generates coupling among three spin channels, resulting… read more here.
Keywords: gas one; spin; bose gas; bound state ... See more keywords
Effective thermalization of a many-body dynamically localized Bose gas
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review A"
DOI: 10.1103/physreva.104.043302
Abstract: Dynamical localization is the analog of Anderson localization in momentum space, where the system’s energy saturates and the single-particle wave-functions are exponentially localized in momentum space. In the presence of interactions, in the context of… read more here.
Keywords: many body; body; bose gas; dynamically localized ... See more keywords
Non-Hermitian skin effect in a one-dimensional interacting Bose gas
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review A"
DOI: 10.1103/physreva.107.043315
Abstract: Non-Hermitian skin effect (NHSE) is a unique feature studied extensively in non-interacting non-Hermitian systems. In this work, we extend the NHSE originally discovered in non-interacting systems to interacting many-body systems by investigating an exactly solvable… read more here.
Keywords: many body; non hermitian; bose gas; skin effect ... See more keywords
Dimensionally induced one-dimensional to three-dimensional phase transition of the weakly interacting ultracold Bose gas
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.95.043610
Abstract: We investigate the dimensionally induced phase transition from the normal to the Bose-Einstein-condensed phase for a weakly interacting Bose gas in an optical lattice. To this end we make use of the Hartree-Fock-Bogoliubov-Popov theory, where… read more here.
Keywords: transition; gas; dimensionally induced; bose gas ... See more keywords
Quantum dark solitons in a Bose gas confined in a hard-wall box
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.96.043602
Abstract: Schrodinger equation for Bose gas with repulsive contact interactions in one-dimensional space may be solved analytically with the help of the Bethe ansatz if we impose periodic boundary conditions. It was shown that in such… read more here.
Keywords: solitons bose; dark solitons; bose gas; gas confined ... See more keywords