Zobrazeno 1 - 10
of 47 652
pro vyhledávání: '"Bose-Einstein condensates"'
Autor:
Matthews, Paige E.
A Bose–Einstein condensate (BEC) is a state of matter of a dilute gas of weakly interacting bosons confined in an external potential and cooled to temperatures very near to absolute zero (0 K or −273.15 °C). Under such conditions, a large fracti
Autor:
Zhang, Xin-Feng, Liu, Yuan-Fen, Luo, Huan-Bo, Liu, Bin, Dou, Fu-Quan, Li, Yongyao, Malomed, Boris A.
We investigate phase transitions of the ground state (GS) of spin-1 Bose-Einstein condensates under the combined action of the spin-orbit coupling (SOC) and gradient magnetic field. Introducing appropariate raising and lowering operators, we exactly
Externí odkaz:
http://arxiv.org/abs/2411.13938
Autor:
Shinn, Seong-Ho, del Campo, Adolfo
In two spatial dimensions, vortex-vortex interactions approximately vary with the logarithm of the inter-vortex distance, making it possible to describe an ensemble of vortices as a Coulomb gas. We introduce a duality between vortices in a quasi-two-
Externí odkaz:
http://arxiv.org/abs/2411.14302
This paper addresses the computation of ground states of multicomponent Bose-Einstein condensates, defined as the global minimiser of an energy functional on an infinite-dimensional generalised oblique manifold. We establish the existence of the grou
Externí odkaz:
http://arxiv.org/abs/2411.09617
Autor:
Llorente, J. M. Gomez, Plata, J.
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 57 235301, 2024
The effects of modulating spin-orbit coupled Bose-Einstein condensates are analytically studied. A sinusoidal driving of the coupling amplitude is shown to induce significant changes in the energy bands and in the associated spin-momentum locking. Mo
Externí odkaz:
http://arxiv.org/abs/2411.03151
It has been shown that dipolar Bose-Einstein condensates that are tightly trapped along the polarization direction can feature a rich phase diagram. In this paper we show that finite temperature can assist in accessing parts of the phase diagram that
Externí odkaz:
http://arxiv.org/abs/2410.19260
Autor:
Pal, Kunal, Fischer, Uwe R.
We consider the unitary quantum dynamics of a Bose-Einstein condensates at absolute zero, and demonstrate that an analogue gravity model in such a setting must take into account the backreaction of quasiparticle excitations onto the condensate backgr
Externí odkaz:
http://arxiv.org/abs/2410.13596
The thermodynamic stability of quantized vortex patterns in rotating Bose-Einstein condensates is assessed at finite temperature using complex Langevin sampling. We construct a temperature-rotation frequency phase diagram and find that that vortices
Externí odkaz:
http://arxiv.org/abs/2409.07791