67 citations · 845 across the 53 of their papers we have counts for
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Quantum Kramers turnover: a phase space function approach
Debashis Barik, Deb Shankar Ray
The problem of Kramers' turnover is a central issue of dynamical theory of reaction rate. Since its classical solution in the Markovian limit in mid-eighties by Melnikov and Meshko…
A generalization of Wolynes factor in activated processes
Debashis Barik, Deb Shankar Ray
Kramers-Grote-Hynes factor is the key nonequilibrium contribution to rate constant of a reaction over and above the transition state theory rate in the spatial limited regime. Woly…
Noise-induced quantum transport
Pulak Kumar Ghosh, Debashis Barik, Deb Shankar Ray
We analyze the problem of directed quantum transport induced by external exponentially correlated telegraphic noise. In addition to quantum nature of the heat bath, nonlinearity of…
Numerical simulation of transmission coefficient using c-number Langevin equation
Debashis Barik, Bidhan Chandra Bag, Deb Shankar Ray
We numerically implement the reactive flux formalism on the basis of a recently proposed c-number Langevin equation [Barik \textit{et al}, J. Chem. Phys. {\bf 119}, 680 (2003); Ban…
Anharmonic quantum contribution to vibrational dephasing
Debashis Barik, Deb Shankar Ray
Based on a quantum Langevin equation and its corresponding Hamiltonian within a c-number formalism we calculate the vibrational dephasing rate of a cubic oscillator. It is shown th…