100 citations · 291 across the 22 of their papers we have counts for
13 papers · 1 filter
Boundary layers, transport and universal distribution in boundary driven active systems
Pritha Dolai, Arghya Das
We discuss analytical results for a run-and-tumble particle (RTP) in one dimension in presence of boundary reservoirs. It exhibits `kinetic boundary layers', nonmonotonous distribu…
Dynamic condensates in aggregation processes with mass injection
Arghya Das, Mustansir Barma
The Takayasu aggregation model is a paradigmatic model of aggregation with mass injection, known to exhibit a power law distribution of mass over a range which grows in time. Worki…
Fluctuation dominated phase ordering in coarse-grained depth models: Domain wall structures, extreme values and coarsening
Arghya Das, Mustansir Barma
Models of particles driven by a one-dimensional fluctuating surface are known to exhibit fluctuation dominated phase ordering (FDPO), in which both the order and fluctuations appea…
Coarsening, condensates and extremes in aggregation-fragmentation models
Chandrashekar Iyer, Arghya Das, Mustansir Barma
We use extreme value statistics to study the dynamics of coarsening in aggregation-fragmentation models which form condensates in the steady state. The dynamics is dominated by the…
Transport and fluctuations in mass aggregation processes: mobility driven clustering
Subhadip Chakraborti, Tanmoy Chakraborty, Arghya Das +2
We calculate the bulk-diffusion coefficient and the conductivity in a broad class of conserved-mass aggregation processes on a ring of discrete sites. These processes involve chipp…
Hydrodynamics, superfluidity and giant number fluctuations in a model of self-propelled particles
Tanmoy Chakraborty, Subhadip Chakraborti, Arghya Das +1
We derive hydrodynamics of a prototypical one dimensional model, having variable-range hopping, which mimics passive diffusion and ballistic motion of active, or self-propelled, pa…
Universal scaling in active single-file dynamics
Pritha Dolai, Arghya Das, Anupam Kundu +3
We study the single-file dynamics of three classes of active particles: run-and-tumble particles, active Brownian particles and active Ornstein-Uhlenbeck particles. At high activit…
Gap statistics of two interacting run and tumble particles in one dimension
Arghya Das, Abhishek Dhar, Anupam Kundu
We study the dynamics of the separation (gap) between a pair of interacting run and tumble particles (RTPs) moving in one dimension in the presence of additional thermal noise. On…
Steady State of an Active Brownian Particle in Two-Dimensional Harmonic Trap
Kanaya Malakar, Arghya Das, Anupam Kundu +2
We find an exact series solution for the steady-state probability distribution of a harmonically trapped active Brownian particle in two dimensions, in the presence of translationa…
Hydrodynamics, density fluctuations and universality in conserved stochastic sandpiles
Sayani Chatterjee, Arghya Das, Punyabrata Pradhan
We study conserved stochastic sandpiles (CSSs), which exhibit an active-absorbing phase transition upon tuning density . We demonstrate that a broad class of CSSs possesses a re…
Einstein relation and hydrodynamics of nonequilibrium mass transport processes
Arghya Das, Anupam Kundu, Punyabrata Pradhan
We obtain hydrodynamic descriptions of a broad class of conserved-mass transport processes on a ring. These processes are governed by chipping, diffusion and coalescence of masses,…
Spatial correlations, additivity and fluctuations in conserved-mass transport processes
Arghya Das, Sayani Chatterjee, Punyabrata Pradhan
We exactly calculate two-point spatial correlation functions in steady state in a broad class of conserved-mass transport processes, which are governed by chipping, diffusion and c…
Additivity property and emergence of power laws in nonequilibrium steady states
Arghya Das, Sayani Chatterjee, Punyabrata Pradhan +1
We show that an equilibriumlike additivity property can remarkably lead to power-law distributions observed frequently in a wide class of out-of-equilibrium systems. The additivity…