Results 31 to 40 of about 1,582 (138)

Stability of the graviton Bose–Einstein condensate in the brane-world [PDF]

open access: yes, 2016
We consider a solution of the effective four-dimensional Einstein equations, obtained from the general relativistic Schwarzschild metric through the principle of Minimal Geometric Deformation (MGD).
R. Casadio, R. Rocha
semanticscholar   +1 more source

Asymmetric solitary vortex evolution in two-dimensional Bose-Einstein condensate in harmonic trap

open access: yesResults in Physics, 2019
We studied the evolution of an asymmetric solitary vortex in a two-dimensional Bose-Einstein condensate starting from a quasi-one dimensional state with external harmonic trapping potential modulation. We derived the analytical solution of the asymmetric
Ying Wang   +4 more
doaj   +1 more source

Observation of persistent flow of a Bose-Einstein condensate in a toroidal trap. [PDF]

open access: yesPhysical Review Letters, 2007
We have observed the persistent flow of Bose-condensed atoms in a toroidal trap. The flow persists without decay for up to 10 s, limited only by experimental factors such as drift and trap lifetime.
C. Ryu   +8 more
semanticscholar   +1 more source

Coexistence of photonic and atomic Bose-Einstein condensates in ideal atomic gases

open access: yesCondensed Matter Physics, 2015
We have studied conditions of photon Bose-Einstein condensate formation that is in thermodynamic equilibrium with ideal gas of two-level Bose atoms below the degeneracy temperature.
N. Boichenko , Yu. Slyusarenko
doaj   +1 more source

Emergence of a molecular Bose–Einstein condensate from a Fermi gas

open access: yesNature, 2003
The realization of superfluidity in a dilute gas of fermionic atoms, analogous to superconductivity in metals, represents a long-standing goal of ultracold gas research.
M. Greiner, C. Regal, D. Jin
semanticscholar   +1 more source

All-optical formation of an atomic Bose-Einstein condensate. [PDF]

open access: yesPhysical Review Letters, 2001
We have created a Bose-Einstein condensate (BEC) of 87Rb atoms directly in an optical trap. We employ a quasielectrostatic dipole force trap formed by two crossed CO2 laser beams. Loading directly from a sub-Doppler laser-cooled cloud of atoms results in
M. Barrett, J. Sauer, M. Chapman
semanticscholar   +1 more source

Fragmented Superradiance of a Bose-Einstein Condensate in an Optical Cavity. [PDF]

open access: yesPhysical Review Letters, 2016
The Dicke model and the superradiance of two-level systems in a radiation field have many applications. Recently, a Dicke quantum phase transition has been realized with a Bose-Einstein condensate in a cavity.
A. Lode, C. Bruder
semanticscholar   +1 more source

Path-Integral Monte Carlo Study on a Droplet of a Dipolar Bose–Einstein Condensate Stabilized by Quantum Fluctuation [PDF]

open access: yes, 2016
Motivated by recent experiments [H. Kadau et al., Nature (London) 530, 194 (2016); I. Ferrier-Barbut et al., arXiv:1601.03318] and theoretical prediction (F. Wachtler and L.
H. Saito
semanticscholar   +1 more source

Analogue cosmological particle creation in an ultracold quantum fluid of light

open access: yesNature Communications, 2022
Under certain conditions light can act as a fluid like a Bose-Einstein condensate. Here the authors discuss an analogy of cosmological particle creation using such a quantum fluid of light.
Jeff Steinhauer   +8 more
doaj   +1 more source

Polaron Dynamics in a Quasi-Two-Dimensional Bose–Einstein Condensate

open access: yesUniverse, 2023
The concept of polaron quasiparticles was first introduced in the pioneering papers by Landau and Feynman in the 1930s and 1940s. It describes the phenomenon of an external particle producing a bound state in an embedded medium.
Shukhrat N. Mardonov   +3 more
doaj   +1 more source

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