Results 61 to 70 of about 38,463 (233)
Loss of superfluidity in a Bose-Einstein condensate via forced resonant oscillations
, 2003 We predict the loss of superfluidity in a Bose-Einstein condensate in an axially symmetric harmonic trap alone during resonant collective oscillations via a classical dynamical transition.
Abdullaev +29 more
core +1 more source
Vortex Line Density in a Superfluid Turbulent Wake in the Zero Temperature Limit
Annalen der Physik, Volume 538, Issue 1, January 2026.The quasiclassical conjecture for quantum turbulence in a pure superfluid straightforwardly leads to the definition of the superfluid Reynolds number, Res=ud/κ$Re_s=ud/\kappa$, and suggests that the effective quantum viscosity should be of the order of the circulation quantum κ$\kappa$.
Hiromitsu Takeuchi
wiley +1 more source
New Journal of Physics, 2018 We study the rotational properties of a two-component Bose–Einstein condensed gas of distinguishable atoms which are confined in a ring potential using both the mean-field approximation, as well as the method of diagonalization of the many-body ...
A Roussou +7 more
doaj +1 more source
Superfluids, Fluctuations and Disorder
Applied Sciences, 2019 We present a field-theory description of ultracold bosonic atoms in the presence of a disordered external potential. By means of functional integration techniques, we aim to investigate and review the interplay between disordered energy landscapes and ...
Alberto Cappellaro, Luca Salasnich
doaj +1 more source
Annalen der Physik, Volume 538, Issue 1, January 2026.Numerically exact quantum Monte Carlo calculations of bipolaron properties are used to estimate transition temperatures (T*) for Hubbard–Holstein models on face‐centre cubic (FCC) and body‐centre cubic lattices. Repulsion (U/W) can make bipolarons lighter and raise T*. Lattice properties leading to 1st order hopping means that T* is much higher for the
Ganiyu D. Adebanjo +2 more
wiley +1 more source
Electron–hole superfluidity in strained Si/Ge type II heterojunctions
npj Quantum Materials, 2021 Excitons are promising candidates for generating superfluidity and Bose–Einstein condensation (BEC) in solid-state devices, but an enabling material platform with in-built band structure advantages and scaling compatibility with industrial semiconductor ...
Sara Conti +7 more
doaj +1 more source
Landau versus Spin Superfluidity in Spinor Bose-Einstein Condensates
, 2013 We consider a spin-1/2 Bose-Einstein condensate prepared initially in a single spin projection. The two channels of excitations existing in such a system (namely density and spin waves) are discussed and we show how pure spin waves can be excited in the ...
Flayac, H. +3 more
core +1 more source
Locking Metastable Topological Domains in Nematic Liquid Crystal Pi Cells
Advanced Functional Materials, Volume 35, Issue 51, December 16, 2025.Selective photopolymerization in the presence of a controlled voltage defines permanent director walls that lock‐in metastable bend and twist configurations within nematic liquid crystal Pi cells. Q‐tensor simulations corroborate the experiments, demonstrating the topological state stabilization.
Adithya Pradeep +7 more
wiley +1 more source
Quantum impurities: from mobile Josephson junctions to depletons
New Journal of Physics, 2016 We overview the main features of mobile impurities moving in one-dimensional superfluid backgrounds by modeling it as a mobile Josephson junction, which leads naturally to the periodic dispersion of the impurity.
Michael Schecter +2 more
doaj +1 more source
Disorder-induced superfluidity
, 2009 We use quantum Monte Carlo simulations to study the phase diagram of hard-core bosons with short-ranged {\it attractive} interactions, in the presence of uniform diagonal disorder.
Lode Pollet +3 more
core +1 more source