scholarly journals Large spectral gap and impurity-induced states in a two-dimensional Abrikosov vortex

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
A. A. Bespalov ◽  
V. D. Plastovets
2016 ◽  
Vol 15 (05) ◽  
pp. 653-666
Author(s):  
Brice Franke ◽  
Nejib Yaakoubi

We construct divergence free vector-fields on compact Riemannian surfaces which push the spectral gap of some diffusion generator above some prescribed value. The resulting diffusion describes some Brownian particle in a stationary incompressible fluid. The spectral gap is an indicator for the speed at which this diffusion converges toward its equilibrium, which corresponds to the uniform distribution. In other terms, we describe efficient fluid motion, to accelerate the convergence to equilibrium of some Brownian particle in a two-dimensional liquid.


1997 ◽  
Vol 39 (6) ◽  
pp. 901-906
Author(s):  
Yu. E. Lozovik ◽  
E. A. Rakoch

2010 ◽  
Vol 82 (18) ◽  
Author(s):  
J. Iaconis ◽  
R. G. Melko ◽  
A. A. Burkov

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.


1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.


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