Results 101 to 110 of about 307,937 (183)

Temporal evolution of cosmological density perturbations of the Bose–Einstein condensate dark matter

European Physical Journal C: Particles and Fields
Dark matter is assumed to be composed of scalar boson particles that form Bose–Einstein condensate during the cosmic evolution of the Universe when the temperature of the dark matter is below the critical temperature $$T_{cr}$$ T cr .
Subhra Mondal, Amitava Choudhuri
doaj   +1 more source

Thermo-optical interactions in a dye-microcavity photon Bose–Einstein condensate

New Journal of Physics, 2017
Superfluidity and Bose–Einstein condensation are usually considered as two closely related phenomena. Indeed, in most macroscopic quantum systems, like liquid helium, ultracold atomic Bose gases, and exciton-polaritons, condensation and superfluidity ...
Hadiseh Alaeian, Mira Schedensack, Clara Bartels, Daniel Peterseim, Martin Weitz   +4 more
doaj   +1 more source

Harmonic analysis on Cayley Trees II: the Bose Einstein condensation

, 2012
We investigate the Bose-Einstein Condensation on non homogeneous non amenable networks for the model describing arrays of Josephson junctions on perturbed Cayley Trees. The resulting topological model has also a mathematical interest in itself.
Fidaleo, Francesco
core   +1 more source

Strongly Coupled Exciton–Hyperbolic‐Phonon‐Polariton Hybridized States in hBN‐Encapsulated Biased Bilayer Graphene

Advanced Optical Materials, Volume 13, Issue 35, December 12, 2025.
Excitons in biased bilayer graphene are electrically tunable excitations in the mid‐infrared (MIR) spectrum, where optical transitions are typically scarce. In this work, it is demonstrated that when the bilayer is encapsulated in hexagonal‐boron‐nitride (hBN)—a material supporting optical phonons and hyperbolic‐phonon‐polaritons (HPhPs) in the MIR—the
Tomer Eini, N. M. R. Peres, Yarden Mazor, Itai Epstein   +3 more
wiley   +1 more source

Fröhlich versus Bose-Einstein condensation in pumped bosonic systems

Physical Review Research
Magnon condensation, which emerges in pumped bosonic systems at room temperature, continues to garner great interest for its long-lived coherence. While traditionally formulated in terms of Bose-Einstein condensation, which typically occurs at ultralow ...
Wenhao Xu, Andrey A. Bagrov, Farhan T. Chowdhury, Luke D. Smith, Daniel R. Kattnig, Hilbert J. Kappen, Mikhail I. Katsnelson   +6 more
doaj   +1 more source

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

Supercurrents and Tunneling in Massive Many‐Vortex Necklaces and Star‐Lattices

Annalen der Physik, Volume 537, Issue 12, December 2025.
It is numerically shown how massive many‐vortex systems, in a mixture of Bose–Einstein condensates, can host the bosonic tunneling of the infilling component in an almost‐periodic way when the vortices are organized in necklaces or star‐lattices. The purpose is to explore the conditions for the onset of Josephson supercurrents in rotating many‐vortex ...
Alice Bellettini, Vittorio Penna
wiley   +1 more source

What do emulsification failure and Bose-Einstein condensation have in common?

, 2000
Ideal bosons and classical ring polymers formed via self-assembly, are known to have the same partition function, and so analogous phase transitions. In ring polymers, the analogue of Bose-Einstein condensation occurs when a ring polymer of macroscopic ...
Blaak R., Cuesta J. A., Feynman R. P., Gelbart W. M., Helfrich W., Huang K., Israelachvili J. N., J. A Cuesta, Kegel W. K., R. P Sear, Reiss H., Schick M.   +11 more
core   +1 more source

Bethe states for the two-site Bose–Hubbard model: A binomial approach

Physics Letters B, 2015
We calculate explicitly the Bethe vectors states by the algebraic Bethe ansatz method with the gl(2)-invariant R-matrix for the two-site Bose–Hubbard model.
Gilberto Santos, Changrim Ahn, Angela Foerster, Itzhak Roditi   +3 more
doaj   +1 more source

Effect of screening of the electron-phonon interaction on the temperature of Bose-Einstein condensation of intersite bipolarons

, 2013
Here we consider an interacting electron-phonon system within the framework of extended Holstein-Hubbard model at strong enough electron-phonon interaction limit in which (bi)polarons are the essential quasiparticles of the system. It is assumed that the
A. Kurmantayev, A. La Magna, A. Macridin, A. Weiße, A.L. Shlugertz, A.R. Davenport, A.S. Alexandrov, A.S. Alexandrov, A.S. Alexandrov, A.S. Alexandrov, A.S. Alexandrov, A.S. Alexandrov, A.S. Alexandrov, A.S. Alexandrov, B. Kurbanbekov, B. Yavidov, B.Ya. Yavidov, B.Ya. Yavidov, B.Ya. Yavidov, B.Ya. Yavidov, C. Gadermaier, D. Alimov, D. Golez, F. Bassani, G. Iadonisi, G. Iadonisi, G. Verbist, G. Wellein, Guo-Meng Zhao, H. Fröhlich, J. Bonca, J.M. Blatt, J.P. Hague, J.P. Hague, J.T. Devreese, L.D. Landau, M. Hohenadler, M.A. Smondyrev, M.R. Schafroth, P.P. Edwards, R.J. McQueeney, S. Dzhumanov, S. Dzhumanov, S. Dzhumanov, S. Dzhumanov, S. Dzhumanov, S. Dzhumanov, Sh. Ramonkulov, T. Holstein, T. Holstein, X.-X. Bi, Y. Takada, Yasutami Takada   +52 more
core   +1 more source