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Vortices in Bose-Einstein Condensed Na Atoms
Keshav N. Shrivastava
There are surface modes on the Bose-Einstein condensed Na atoms so that the number of vortices diverges when the stirring frequency becomes equal to that of the surface waves. We i…
Illumination of quantum Hall effect
Keshav N. Shrivastava
We show that illumination by continuous white radiation saturates the population of levels so that some of the transitions are not observed. This reduces the number of observable t…
A new phase in the bilayers of semiconductors in quantum Hall effect
Keshav N. Shrivastava
We find that a bilayer of semiconductors emits a new Goldstone quasiparticle when Landau levels in the layers are half filled. The emission of the new quasiparticle is associated w…
Polarization of the helf-filled Landau level in quantum Hall effect
Keshav N. Shrivastava
We develop a theory of the half-filled Landau level which shows that it is a two-component fluid. One of the components has spin up and the other spin down so that the electron-spi…
Statistics of composite fermions in the quantum hall effect
Keshav N. Shrivastava
The High Landau level filling fractions 5/2, 7/3 and 8/3 are interpreted by using the angular momentum model. It is found that for the odd number of flux quanta, the quasiparticles…
NMR in the quantum Hall effect
Keshav N. Shrivastava
We report that the rate of field sweep is important for the observation of the zeroes in the transverse resistivity in the quantum Hall effect. The resistivity also shows resonance…