Results 101 to 110 of about 142,410 (240)

Entropy maximizers for kinetic wave equations set on tori

Bulletin of the London Mathematical Society, EarlyView.
Abstract We consider the kinetic wave equation, or phonon Boltzmann equation, set on the torus (physical system set on the lattice). We describe entropy maximizers for fixed mass and energy; our framework is very general, being valid in any dimension, for any dispersion relation, and even including the quantum kinetic wave equation.
Miguel Escobedo, Pierre Germain, Joonhyun La, Angeliki Menegaki   +3 more
wiley   +1 more source

Two-dimensional Bose–Einstein condensate under pressure

New Journal of Physics, 2015
Evading the Mermin–Wagner–Hohenberg no-go theorem and revisiting with rigor the ideal Bose gas confined in a square box, we explore a discrete phase transition in two spatial dimensions.
Wonyoung Cho, Sang-Woo Kim, Jeong-Hyuck Park   +2 more
doaj   +1 more source

Bose-Einstein condensation of excitons in Cu$_2$O

, 2002
We present a parameter-free model which estimates the density of excitons in Cu$_2$O, related to experiments that have tried to create an excitonic Bose-Einstein condensate.
D.P. Trauernicht, D.W. Snoke, D.W. Snoke, D.W. Snoke, D.W. Snoke, D.W. Snoke, F. Dalfovo, F.I. Kreingol’d, G. M. Kavoulakis, G.M. Kavoulakis, G.M. Kavoulakis, G.M. Kavoulakis, G.M. Kavoulakis, J.C. Kim, J.L. Lin, J.M. Kosterlitz, J.S. Weiner, K. Johnsen, K.E. O’Hara, L.V. Butov   +19 more
core   +1 more source

Standing waves of Schrödinger equation with constant magnetic field and combined power nonlinearities

Bulletin of the London Mathematical Society, EarlyView.
Abstract We study standing waves of the Schrödinger equation with constant magnetic field and combined power nonlinearities, which describes a single non‐relativistic quantum particle in the presence of an electromagnetic field. We develop the local minima geometry method to establish the existence, estimates and mass collapse results for this equation,
Zhaosheng Feng, Yu Su
wiley   +1 more source

Enhancing capacity of coherent optical information storage and transfer in a Bose-Einstein condensate

, 2007
Coherent optical information storage capacity of an atomic Bose-Einstein condensate is examined. Theory of slow light propagation in atomic clouds is generalized to short pulse regime by taking into account group velocity dispersion. It is shown that the
A. B. Matsko, C. Liu, D. Budker, D. Tarhan, L. V. Hau, M. D. Lukin, M. D. Lukin, M. M. Kash, M. Naraschewski, S. Inouye, Ö. E. Müstecaplioǧlu, Ö. E. Müstecaplioǧlu   +11 more
core   +1 more source

Coherence, Transport, and Chaos in 1D Bose–Hubbard Model: Disorder vs. Stark Potential

Fortschritte der Physik, Volume 73, Issue 11, November 2025.
Quantum coherence and criticality in finite Bose–Hubbard chains are investigated using exact diagonalization. Thermal fluctuations, Stark potential, and disorder reshape coherence, visibility, and superfluid response. Finite‐size systems show signatures of quantum criticality, with disorder suppressing global superfluidity but preserving local ...
Asad Ali, M.I. Hussain, Saif Al‐Kuwari, M. T. Rahim, H. Kuniyil, Seyed Mohammad Hosseiny, Jamileh Seyed‐Yazdi, Hamid Arian Zad, Saeed Haddadi   +8 more
wiley   +1 more source

Dynamics of cosmological phase crossover during Bose–Einstein condensation of dark matter in Tsallis cosmology

European Physical Journal C: Particles and Fields
During the cosmic evolution process, as the temperature of a cosmological boson gas falls below a certain threshold, a Bose–Einstein condensation process can occur at various points throughout the cosmic history of the Universe.
Subhra Mondal, Amitava Choudhuri
doaj   +1 more source

THE INTERFACE POSITION OF A BOSE-EINSTEIN CONDENSATE MIXTURE RESTRICTED BY A HARD WALL IN THE DOUBLE-PARABOLA APPROXIMATION

Tạp chí Khoa học Đại học Đà Lạt
In this study, we determine the interface position of a binary Bose-Einstein condensate mixture in the prewetting phase, confined by a hard wall, at absolute zero temperature. An approximate analytical result is obtained by employing the double-parabola
Duy Thanh Pham, Thanh Hai Dang
doaj   +1 more source

Critical slowdown of non-equilibrium polaron dynamics

New Journal of Physics, 2019
We study the quantum dynamics of a single impurity following its sudden immersion into a Bose–Einstein condensate. The ensuing formation of the Bose polaron in this general setting can be seen as impurity decoherence driven by the condensate, which we ...
K Knakkergaard Nielsen, L A Peña Ardila, G M Bruun, T Pohl   +3 more
doaj   +1 more source

Soliton diffusion in a Bose-Einstein condensate: A signature of the analogue Hawking radiation

Physics Letters B, 2019
The analog Hawking radiation (HR) emanating from a sonic black hole horizon formed in a cigar-shaped Bose-Einstein condensate (BEC) at finite temperature is investigated. In particular, we study the effect of HR on a dark (topological) soliton.
Chao Hang, Gregory Gabadadze, Guoxiang Huang   +2 more
doaj   +1 more source