1 citations · 1 across the 29 of their papers we have counts for
12 papers · 1 filter
Fractional charge in quantum Hall effect
Keshav N. Shrivastava
In 1976 Jackiw and Rebbi found 1/2 of a fermion number by using Dirac equation in 1+1 dimensions. Schrieffer in several proposals made an effort to suggest that there is a fraction…
Nonuniqueness of Kivelson, Kallin, Arovas and Schrieffer' fractional charge
Keshav N. Shrivastava
It is found that the magnetic length has not been treated correctly to calculate the classical action. In fact, the charge and the magnetic length have not been resolved. It is of…
Disappearance of fractional statistics in Schrieffer-Wilczek theory
Keshav N. Shrivastava
The paper of Arovas, Schrieffer and Wilczek is corrected. It is found that the Berry's phase is vanishingly small. Accordingly, the statistical vector potential becomes negligibly…
Comments on ``Evidence of Landau Levels and Interactions in Low-Lying Excitations of Composite Fermions ..." by Dujovne, Pinczuk, Kang, Dennis, Pfeiffer and West, cond-mat/0211022
Keshav N. Shrivastava
Dujavne et al suggest that the observed spectra are a result of spin-split Landau levels and spin-flip energies reveal composite fermion interactions. We find that the CF effective…
Comments on``Theoretical search for the nested quantum Hall effect of composite fermions" by Mandal and Jain,Phys.Rev.B 66,155302(2002); cond-mat/0210181
Keshav N. Shrivastava
We find that a large number of parameters are used to create the correct fractions. The parameters used are, ν, 1-ν,ν^*,\bar n, n, p and \bar p. Therefore, the predicted fractions…
The alternative to the incompressible fractional charge in the quantum Hall effect: Comments on Laughlin and Schrieffer's papers
Keshav N. Shrivastava
Laughlin has found "exactly" the wave function which is ascribed to an excitation of fractional charge, such as e/3. We find that the exactness of the wave function is not destroye…