596 citations · 1.9k across the 99 of their papers we have counts for
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The variational method applied to the harmonic oscillator in presence of a delta function potential
Indrajit Ghose, Parongama Sen
The problem of the harmonic oscillator with a centrally located delta function potential can be exactly solved in one dimension where the eigenfunctions are expressed as superposit…
Persistent quantum walks: dynamic phases and diverging timescales
Suchetana Mukhopadhyay, Parongama Sen
A discrete time quantum walk is considered in which the step lengths are chosen to be either or with the additional feature that the walker is persistent with a probability…
Scaling and crossover behaviour in a truncated long range quantum walk
Parongama Sen
We consider a discrete time quantum walker in one dimension, where at each step, the step length is chosen from a distribution with $\ell \leq…
Unusual scaling in a discrete quantum walk with random long range steps
Parongama Sen
A discrete time quantum walker is considered in one dimension, where at each step, the translation can be more than one unit length chosen randomly. In the simplest case, the proba…
Quantum random walk : effect of quenching
Sanchari Goswami, Parongama Sen
We study the effect of quenching on a discrete quantum random walk by removing a detector placed at a position abruptly at time from its path. The results show that thi…