Results 71 to 80 of about 6,001 (225)

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

open access: yesPhysics 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   +2 more
doaj   +1 more source

Electromagnetic quantum shifts in relativistic Bose-Einstein condensation

open access: yesPhysics Letters B, 2021
We compute deviations from ideal gas behavior of the pressure, density, and Bose-Einstein condensation temperature of a relativistic gas of charged scalar bosons caused by the current-current interaction induced by electromagnetic quantum fluctuations ...
D.M. Reis, C.A.A. de Carvalho
doaj   +1 more source

Bose-Einstein Condensation of Erbium [PDF]

open access: yesPhysical Review Letters, 2012
We report on the achievement of Bose-Einstein condensation of erbium atoms and on the observation of magnetic Feshbach resonances at low magnetic field. By means of evaporative cooling in an optical dipole trap, we produce pure condensates of $^{168}$Er, containing up to $7 \times 10^{4}$ atoms.
K. Aikawa   +6 more
openaire   +3 more sources

Standing waves of nonlinear Schrödinger systems with all attractive forces

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 6, June 2026.
Abstract Since the pioneering work of Lin and Wei on nonlinear Schrödinger systems of n$n$ components with interaction forces aij$a_{ij}$ between the i$i$‐th and j$j$‐th components for 1⩽i,j⩽n$1\leqslant i,j\leqslant n$, there have been numerous further developments in many directions. However, even in the simplest case where all interaction forces are
Jaeyoung Byeon
wiley   +1 more source

Numerical studies of vortices and dark solitons in atomic Bose-Einstein condensates [PDF]

open access: yes, 2004
Dilute atomic Bose-Einstein condensates support intriguing macroscopic excitations in the form of quantized vortices and dark solitons. In this thesis we present extensive quantitative studies of the dynamics of these phenomena in the limit of zero ...
Parker, Nicholas
core  

Structure of condensed gas in the uniform medium

open access: yesCumhuriyet Science Journal, 2020
The Bose-Einstein condensate, which has very low particle density and a highly complex quantum structure, has been proven experimentally for rubidium, sodium, lithium, hydrogen, metastable helium, cesium and chromium atoms to date.
Abidin Kılıç
doaj   +1 more source

Strong Plasmon–Exciton Coupling Tuned by Corner Etching of Gold Nanocubes and Nanotriangles

open access: yesAdvanced Optical Materials, Volume 14, Issue 18, 15 May 2026.
Systematic etching of gold nanocubes (AuNCs) and nanotriangles (AuNTs) reveals how nanoparticle morphology governs plasmon–exciton strong coupling. While rounding the corners of AuNCs weakens their coupling, triangular geometries robustly preserve deep strong coupling.
Jiyeon Lee   +4 more
wiley   +1 more source

Many body effects in one-dimensional attractive Bose gases [PDF]

open access: yes, 2013
In this thesis we investigate the properties of ultra-cold quantum gases in reduced dimension and the effects of harmonic confinement on soliton-like properties.
HOLDAWAY, DAVID,IAN,HENRY
core  

Two-dimensional Bose–Einstein condensate under pressure

open access: yesNew 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   +2 more
doaj   +1 more source

Basics of Bose-Einstein condensation [PDF]

open access: yesPhysics of Particles and Nuclei, 2011
The review is devoted to the elucidation of the basic problems arising in the theoretical investigation of systems with Bose-Einstein condensate. Understanding these challenging problems is necessary for the correct description of Bose-condensed systems.
openaire   +2 more sources

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