Results 21 to 30 of about 31,438 (162)

Kinetics of Strongly Nonequilibrium Magnon Gas Leading to Bose-Einstein Condensation [PDF]

open access: yesЖурнал нано- та електронної фізики, 2017
Kinetic equations describing nonequilibrium magnon gas under the action of parametric pumping are considered with an account of kinetic instability processes. These processes strongly influence condition of magnon Bose-Einstein condensate formation.
D.V. Slobodianiuk, O.V. Prokopenko
doaj   +1 more source

Temperature of the hot α-source: A guidance to probe the Bose-Einstein condensation of α clusters in the heavy-ion collision

open access: yesPhysics Letters B, 2023
Recent experimental efforts were made to explore the Bose-Einstein condensation in multi-α system using the heavy-ion collisions. This Letter provides an explanation why no signatures were observed and a guidance for future experiments. More precisely, a
Jun Su, Long Zhu
doaj   +1 more source

Bose-Einstein Condensation of Long-Lifetime Polaritons in Thermal Equilibrium [PDF]

open access: yes, 2016
Exciton-polaritons in semiconductor microcavities have been used to demonstrate quantum effects such as Bose-Einstein condensation, superfluity, and quantized vortices.
Liu, Gangqiang   +8 more
core   +2 more sources

Fragmentation, domain formation and atom number fluctuations of a two-species Bose–Einstein condensate in an optical lattice

open access: yesNew Journal of Physics, 2012
We theoretically study the loading of a two-species Bose-Einstein condensate to an optical lattice in a tightly-confined one-dimensional trap. Due to quantum fluctuations the relative inter and intra species phase coherence between the atoms and the on-site atom number fluctuations are reduced in the miscible regime.
Shrestha, Uttam, Ruostekoski, Janne
openaire   +4 more sources

Repulsively diverging gradient of the density functional in the reduced density matrix functional theory

open access: yesNew Journal of Physics, 2021
The reduced density matrix functional theory (RDMFT) is a remarkable tool for studying properties of ground states of strongly interacting quantum many body systems.
Tomasz Maciążek
doaj   +1 more source

Competition between Bose Einstein Condensation and spin dynamics [PDF]

open access: yes, 2016
We study the impact of spin-exchange collisions on the dynamics of Bose-Einstein condensation, by rapidly cooling a chromium multi-component Bose gas.
Brewczyk, Miroslaw   +6 more
core   +3 more sources

Bose–Einstein condensation in the Rindler space

open access: yesPhysics Letters B, 2015
Based on the Unruh effect, we calculate the critical acceleration of the Bose–Einstein condensation in a free complex scalar field at finite density in the Rindler space.
Shingo Takeuchi
doaj   +1 more source

Machine-learning-accelerated Bose-Einstein condensation

open access: yesPhysical Review Research, 2022
Machine learning is emerging as a technology that can enhance physics experiment execution and data analysis. Here, we apply machine learning to accelerate the production of a Bose-Einstein condensate (BEC) of ^{87}Rb atoms by Bayesian optimization of up
Zachary Vendeiro   +7 more
doaj   +1 more source

A Dicke Type Model for Equilibrium BEC Superradiance [PDF]

open access: yes, 2004
We study the effect of electromagnetic radiation on the condensate of a Bose gas. In an earlier paper we considered the problem for two simple models showing the cooperative effect between Bose-Einstein condensation and superradiance.
Andreev A V   +10 more
core   +5 more sources

Study of Attractive Nonlinearity by 1-D Nonlinear Schrödinger Equation in the Bose–Einstein Condensate

open access: yesJournal of Bangladesh Academy of Sciences, 1970
The work represents and investigates the stationary solutions of the one-dimensional Non-linear Schrödinger Equation (NLSE), for attractive non-linearity, in the Bose-Einstein condensates (BEC) under the box boundary condition and calculates the characteristics of internal modes of bright solitons (eigen modes of small perturbation of the condensate ...
MH Rashid   +4 more
openaire   +2 more sources

Home - About - Disclaimer - Privacy