3 papers
quant-ph2001
An Entropic Uncertainty Principle for Quantum Measurements
M Krishna, K R Parthasarathy
The entropic uncertainty principle as outlined by Maassen and Uffink for a pair of non-degenerate observables in a finite level qusystem is generalized here to the case of a pair o…
math-ph1999
Spectra of Anderson type models with decaying randomness
M. Krishna, K. B. Sinha
In this paper we consider some Anderson type models, with decaying randomness and the free parts having long range tails. The randomness may decay at different rates in different d…
math-ph1998
Localization and mobility edge for sparsely random potentials
M Krishna, J Obermeit
In this paper we consider sparsely random potentials in 5 or more dimensional cubic lattice and exhibit localized and extended states. We identify also the mobility edge for a clas…