Results 21 to 30 of about 187,459 (173)

Slowly rotating Bose Einstein condensate galactic dark matter halos, and their rotation curves

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
If dark matter is composed of massive bosons, a Bose–Einstein condensation process must have occurred during the cosmological evolution. Therefore galactic dark matter may be in a form of a condensate, characterized by a strong self-interaction.
Xiaoyue Zhang   +4 more
doaj   +1 more source

Fourier transforming a trapped Bose-Einstein condensate by waiting a quarter of the trap period: simulation and applications [PDF]

open access: yes, 2006
We investigate the property of isotropic harmonic traps to Fourier transform a weakly interacting Bose–Einstein condensate (BEC) every quarter of a trap period.
Ohberg, Patrik; id_orcid   +5 more
core   +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

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

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

Simulating ultracold matter: horizons and slow light [PDF]

open access: yes, 2008
This thesis explores the links between different ways of modelling the physical world. Finite difference numerical simulations may be used to encode the behaviour of physical systems, allowing us to gain insight into their workings and even to predict ...
Farrell, Conor
core   +2 more sources

Coherent gamma photon generation in a Bose–Einstein condensate of 135mCs

open access: yesPhysics Letters B, 2018
We have identified a mechanism of collective nuclear de-excitation in a Bose–Einstein condensate of 135Cs atoms in their isomeric state, 135mCs, suitable for the generation of coherent gamma photons.
Luca Marmugi   +2 more
doaj   +1 more source

Bose-Einstein condensate of Dirac magnons: Pumping and collective modes

open access: yesPhysical Review Research, 2021
We explore the formation and collective modes of Bose-Einstein condensate of Dirac magnons (Dirac BEC). While we focus on two-dimensional Dirac magnons, an employed approach is general and could be used to describe Bose-Einstein condensates with linear ...
P. O. Sukhachov   +2 more
doaj   +1 more source

Bose-Einstein Condensate in Synchronous Coordinates

open access: yesPhysical Sciences Forum, 2023
Analytical spherically symmetric static solution to the set of Einstein and Klein-Gordon equations in a synchronous reference frame is considered. In a synchronous reference frame, a static solution exists in the ultrarelativistic limit p=−ε/3.
Boris E. Meierovich
doaj   +1 more source

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