Results 41 to 50 of about 519,355 (198)

The Q^2-Dependence of Nuclear Transparency for Exclusive $\rho^0$ Production

open access: yes, 2002
Exclusive coherent and incoherent electroproduction of the $\rho^0$ meson from $^1$H and $^{14}$N targets has been studied at the HERMES experiment as a function of coherence length ($l_c$), corresponding to the lifetime of hadronic fluctuations of the ...
A. Airapetian   +182 more
core   +1 more source

Phase Dynamics in 3D Superconductors: Analysis Using the Sine-Gordon

open access: yesSpektra: Jurnal Fisika dan Aplikasinya
This study investigates the phase dynamics of superconducting states in 3D superconductors using the sine-Gordon equation, with a focus on the interplay between the London penetration depth (LPD) and coherence length ( ).
Kiran Khadka   +2 more
doaj   +1 more source

Momentum-resolved study of an array of 1D strongly phase-fluctuating Bose gases

open access: yes, 2010
We investigate the coherence properties of an array of one-dimensional Bose gases with short-scale phase fluctuations. The momentum distribution is measured using Bragg spectroscopy and an effective coherence length of the whole ensemble is defined.
C. Fort   +6 more
core   +4 more sources

Effect of disorder close to the superfluid transition in a two-dimensional Bose gas

open access: yes, 2012
We experimentally study the effect of disorder on trapped quasi two-dimensional (2D) 87Rb clouds in the vicinity of the Berezinskii-Kosterlitz-Thouless (BKT) phase transition. The disorder correlation length is of the order of the Bose gas characteristic
Allard, Baptiste   +6 more
core   +3 more sources

The evolution of σγP with coherence length

open access: yesNew Journal of Physics, 2016
Assuming the form ${\sigma }^{\gamma {\rm{P}}}\propto {l}^{{\lambda }_{{\rm{eff}}}}$ at fixed Q ^2 for the behavior of the virtual-photon proton scattering cross section, where l is the coherence length of the photon fluctuations, it is seen that the ...
Allen Caldwell
doaj   +1 more source

Transmission Characteristics and Spatial Coherence of Partially Coherent Light-Emitting Diode Array in the Ocean

open access: yesPhotonics, 2023
Underwater LED light sources are commonly implemented in array configurations with a wide-angle field of view, primarily catering to high-speed communication within a few meters.
Zhifang Miao   +4 more
doaj   +1 more source

Spatial structure of quark Cooper pairs in a color superconductor [PDF]

open access: yes, 1999
Spatial structure of Cooper pairs with quantum numbers color 3^*, I=J=L=S=0 in ud 2 flavor quark matter is studied by solving the gap equation and calculating the coherence length in full momentum range without the weak coupling approximation.
B. C. Barrois   +37 more
core   +4 more sources

Magnetic-coherence-length scaling in metallic multilayers [PDF]

open access: yesPhysical Review B, 1996
An improved description of the critical properties of metallic multilayers is obtained by introducing the concept of a scaled magnetic coherence length in the Takahashi-Tachiki theory. By that, the absolute magnitude of the upper critical fields and the position of the dimensional crossover are uncoupled and become independent quantities.
Koperdraad, R.T.W., Lodder, A.
openaire   +3 more sources

Interaction induced phase fluctuations in a guided atom laser

open access: yes, 2002
In this paper, we determine the magnitude of phase fluctuations caused by atom-atom interaction in a one-dimensional beam of bosonic atoms. We imagine that the beam is created with a large coherence length, and that interactions only act in a specific ...
Bouchoule, Isabelle, Moelmer, Klaus
core   +2 more sources

Boundary layers and emitted excitations in nonlinear Schrodinger superflow past a disk [PDF]

open access: yes, 2004
The stability and dynamics of nonlinear Schrodinger superflows past a two-dimensional disk are investigated using a specially adapted pseudo-spectral method based on mapped Chebychev polynomials.
Anderson   +34 more
core   +4 more sources

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