134 citations · 1k across the 75 of their papers we have counts for
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Formal Aspects of Quantum Decay
D. F. Ramírez Jiménez, N. G. Kelkar
The Fock-Krylov formalism for the calculation of survival probabilities of unstable states is revisited paying particular attention to the mathematical constraints on the density o…
Electron interaction with the environment in tunnel ionization
D. Lozano-Gómez, N. G. Kelkar
The average dwell time of an electron in a potential barrier formed by an external electric field and the potential of a helium atom is evaluated within a semi classical one-dimens…
Quantum decay law: Critical times and the Equivalence of approaches
D. F. Ramírez Jiménez, N. G. Kelkar
Methods based on the use of Green's functions or the Jost functions and the Fock-Krylov method are apparently very different approaches to understand the time evolution of unstable…
Electron tunneling times
N. G. Kelkar
Tunneling is one of the most bizarre phenomena in quantum mechanics. An attempt to understand it led to the next natural question of how long does a particle need to tunnel a barri…
Time in dissipative tunneling: subtleties and applications
N. G. Kelkar, D. Lozano Gómez, Edgar J. Patiño
Characteristic features of tunneling times for dissipative tunneling of a particle through a rectangular barrier are studied within a semiclassical model involving dissipation in t…
No classical limit of quantum decay for broad states
N. G. Kelkar, M. Nowakowski
Though the classical treatment of spontaneous decay leads to an exponential decay law, it is well known that this is an approximation of the quantum mechanical result which is a no…