Results 61 to 70 of about 144,548 (197)

Decoherence effects in quantum nondemolition measurement induced entanglement between Bose–Einstein condensates [PDF]

open access: green, 2022
Shuai Gao   +6 more
openalex   +1 more source

Derivation of the Gross‐Pitaevskii hierarchy for the dynamics of Bose‐Einstein condensate [PDF]

open access: yes, 2004
Consider a system of N bosons on the three‐dimensional unit torus interacting via a pair potential N2V(N(xi − xj)) where x = (x1, …, xN) denotes the positions of the particles. Suppose that the initial data ψN, 0 satisfies the condition $$ \bigl< \psi_{N,
L. Erdős, B. Schlein, H. Yau
semanticscholar   +1 more source

Collective dipole oscillations of a spin-orbit coupled Bose-Einstein condensate. [PDF]

open access: yesPhysical Review Letters, 2012
In this Letter, we present an experimental study of the collective dipole oscillation of a spin-orbit coupled Bose-Einstein condensate in a harmonic trap.
Jin-Yi Zhang   +11 more
semanticscholar   +1 more source

Time‐Domain Visualization of Electron‐Phonon Coupling in Nanographenes

open access: yesSmall Methods, EarlyView.
Impulsive vibrational spectroscopy, Raman spectroscopy, and density functional theory calculations are gathered together to unveil elusive low‐frequency collective vibrational modes in dibenzo[hi,st]ovalene nanographenes, enabling the detailed comparison between vibrational modes in derivatives with different peripheral groups.
Rafael Muñoz‐Mármol   +13 more
wiley   +1 more source

Composite structure of vortices in two-component Bose-Einstein condensate

open access: yes, 2015
In contrast to one-component Bose-Einstein condensate case, the vortices in two-component condensate can have various complicated structures. The vortices in a space-homogeneous Bose-Einstein condensate have been studied in this paper.
Ivashin, Anatoly P., Poluektov, Yuri M.
core   +2 more sources

Derivation of the Gross-Pitaevskii equation for the dynamics of Bose-Einstein condensate [PDF]

open access: yes, 2004
Consider a system of N bosons in three dimensions interacting via a repulsive short range pair potential N 2 V (N(xi − xj)), where x = (x1, . . ., xN) denotes the positions of the particles. Let HN denote the Hamiltonian of the system and let ψN,t be the
L. Erdős, B. Schlein, H. Yau
semanticscholar   +1 more source

Stationary states of a rotating Bose-Einstein condensate: routes to vortex nucleation. [PDF]

open access: yesPhysical Review Letters, 2001
Using a focused laser beam we stir a 87Rb Bose-Einstein condensate confined in a magnetic trap. We observe that the steady states of the condensate correspond to an elliptic cloud, stationary in the rotating frame.
K. Madison   +3 more
semanticscholar   +1 more source

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

open access: yesBulletin 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

Effect of Dimple Potential on Ultraslow Light in a Bose-Einstein Condensate

open access: yes, 2012
We investigate the propagation of ultraslow optical pulse in atomic Bose-Einstein condensate in a harmonic trap decorated with a dimple potential. The role of dimple potential on the group velocity and time delay is studied.
Tarhan, Devrim, Uncu, Haydar
core   +1 more source

Coordinate‐ and Spacetime‐Independent Quantum Physics

open access: yesAnnalen der Physik, Volume 538, Issue 1, January 2026.
This article studies in the framework of quantum field theory in curved spacetime, if there exists a single zero‐rank‐tensor solution of a Klein‐Gordon PDE, being valid at once for the depicted spacetimes. The answer is shown to be affirmative, even for a class of such solutions having the standard applications in particle physics. ABSTRACT The concept
Viacheslav A. Emelyanov, Daniel Robertz
wiley   +1 more source

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