257 citations · 850 across the 36 of their papers we have counts for
37 papers
Diffusive-to-Ballistic transition in a Persistent Random Walk
Amit Pradhan, Reshmi Roy, Purusattam Ray
We study persistent random walk with time dependent velocity reversal probabilities and identify a criterion for a non-equilibrium dynamical transition. As a representative example…
Modeling crack propagation in heterogeneous materials: Griffith's law, intrinsic crack resistance and avalanches
Subhadeep Roy, Takahiro Hatano, Purusattam Ray
Various kinds of heterogeneity in solids including atomistic discreteness affect the fracture strength as well as the failure dynamics remarkably. Here we study the effects of an i…
system in one dimension with particle motion determined by nearest neighbour distances: results for parallel updates
Reshmi Roy, Parongama Sen, Purusattam Ray
A one dimensional system where the direction of motion of the particles is determined by the position of the nearest neighours is studied. The particles move wi…
Tagged particle dynamics in one dimensional models with the particles biased to diffuse towards their nearest neighbour
Reshmi Roy, Purusattam Ray, Parongama Sen
Dynamical features of tagged particles are studied in a one dimensional system for and 1, where the particles have a bias to…
Universality classes of absorbing phase transitions in generic branching-annihilating particle systems
Bijoy Daga, Purusattam Ray
We study absorbing phase transitions in systems of branching annihilating random walkers and pair contact process with diffusion on a one dimensional ring, where the walkers hop to…
A Renormalization Group Procedure for Fiber Bundle Models
Srutarshi Pradhan, Alex Hansen, Purusattam Ray
We introduce two versions of a renormalization group scheme for the equal load sharing fiber bundle model. The renormalization group is based on formulating the fiber bundle model…