Showing papers by "Bidhan Chandra Bag published in 2006"
Journal Article•
TL;DR: 2DG is a safe compound but can cause a fall in the blood pressure and a decrease in respiratory frequency at high doses, and also the cardio-respiratory effects following high doses of 2DG in animal models.
47 citations
TL;DR: The mean first passage time (MFPT) for the particle to escape from an unstable limit cycle is numerically calculated and finds resonant activation, i.e., the MFPT first decreases, followed by a rise after passing through a minimum with increasing noise correlation time tau for a fixed noise variance.
Abstract: We consider a Brownian particle acted on by a linear conservative force, a nonlinear frictional force, and multiplicative colored and additive white noises; the frictional force can be negative when the external energy supply is large enough. We numerically calculate the mean first passage time (MFPT) for the particle to escape from an unstable limit cycle and find resonant activation, i.e., the MFPT first decreases, followed by a rise after passing through a minimum with increasing noise correlation time tau for a fixed noise variance. For fixed noise strength of the multiplicative noise the MFPT increases linearly with tau. This is in sharp contrast to the case of fluctuations of nonlinear potentials, in which the MFPT first increases nonlinearly before reaching a limiting value. Our model could be useful for understanding some biological processes.
30 citations
TL;DR: This work extends the analysis of this phenomenon of resonant activation to quantum domain to show how quantization significantly enhances resonantactivation at low temperature due to tunneling.
Abstract: The escape rate of a particle over a fluctuating barrier in a double well potential exhibits resonance at an optimum value of correlation time of fluctuation. This has been shown to be important in several variants of kinetic model of chemical reactions . We extend the analysis of this phenomenon of resonant activation to quantum domain to show how quantization significantly enhances resonant activation at low temperature due to tunneling.
26 citations