Results 21 to 30 of about 38,380 (146)

Characterisation of the dynamical quantum state of a zero temperature Bose-Einstein condensate [PDF]

, 2002
We describe the quantum state of a Bose-Einstein condensate at zero temperature. By evaluating the Q-function we show that the ground state of Bose-Einstein condensate under the Hartree approximation is squeezed.
Burnett, K., Choi, S., New, G. H. C., Rogel-Salazar, J.   +3 more
core   +2 more sources

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

Condensed 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

Analogue cosmological particle creation in an ultracold quantum fluid of light

Nature 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, Murad Abuzarli, Tangui Aladjidi, Tom Bienaimé, Clara Piekarski, Wei Liu, Elisabeth Giacobino, Alberto Bramati, Quentin Glorieux   +8 more
doaj   +1 more source

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

Universe, 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, Bobir A. Toshmatov, Bobomurat J. Ahmedov, Shukurillo T. Inoyatov   +3 more
doaj   +1 more source

Transition of a mesoscopic bosonic gas into a Bose-Einstein condensate

, 2011
The condensate number distribution during the transition of a dilute, weakly interacting gas of N=200 bosonic atoms into a Bose-Einstein condensate is modeled within number conserving master equation theory of Bose-Einstein condensation.
Schelle, Alexej
core   +1 more source

Observation of Bose-Einstein Condensation of Molecules

, 2003
We have observed Bose-Einstein condensation of molecules. When a spin mixture of fermionic Li-6 atoms was evaporatively cooled in an optical dipole trap near a Feshbach resonance, the atomic gas was converted into Li_2 molecules.
Gupta, S., Hadzibabic, Z., Ketterle, W., Raupach, S. M. F., Schunck, C. H., Stan, C. A., Zwierlein, M. W.   +6 more
core   +1 more source

Resonances for coupled Bose-Einstein Condensates [PDF]

, 2004
We study some effects arising from periodic modulation of the asymmetry and the barrier height of a two-well potential containing a Bose-Einstein condensate.
A. M. Perelomov, G. Nienhuis, H. L. Haroutyunyan, T. G. Tiecke   +3 more
core   +1 more source

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

Physics 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, Philip M. Walker, Ferruccio Renzoni   +2 more
doaj   +1 more source

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

Physical 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, S. Banerjee, A. V. Balatsky   +2 more
doaj   +1 more source

Topological Objects in Two-component Bose-Einstein Condensates

, 2005
We study the topological objects in two-component Bose-Einstein condensates. We compare two competing theories of two-component Bose-Einstein condensate, the popular Gross-Pitaevskii theory and the recently proposed gauge theory of two-component Bose ...
A. Abrikosov, F. Lin, G. Volovik, Hyojoong Khim, L. Kapitansky, M. Metlitski, Pengming Zhang, T. H. R. Skyrme, T. H. R. Skyrme, Y. M. Cho, Y. Makhlin   +10 more
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