Non-equilibrium statistical mechanics: from a paradigmatic model to biological transport
Unlike equilibrium statistical mechanics, with its well-established foundations, a similar
widely accepted framework for non-equilibrium statistical mechanics (NESM) remains …
widely accepted framework for non-equilibrium statistical mechanics (NESM) remains …
Fluctuations and pattern formation in self-propelled particles
We consider a coarse-grained description of a collection of self-propelled particles given by
hydrodynamic equations for the density and polarization fields. We find that the ordered …
hydrodynamic equations for the density and polarization fields. We find that the ordered …
Active nematics are intrinsically phase separated
S Mishra, S Ramaswamy - Physical review letters, 2006 - APS
Two-dimensional nonequilibrium nematic steady states, as found in agitated granular-rod
monolayers or films of orientable amoeboid cells, were predicted [Europhys. Lett. 62, 196 …
monolayers or films of orientable amoeboid cells, were predicted [Europhys. Lett. 62, 196 …
Large compact clusters and fast dynamics in coupled nonequilibrium systems
We demonstrate particle clustering on macroscopic scales in a coupled nonequilibrium
system where two species of particles are advected by a fluctuating landscape and modify …
system where two species of particles are advected by a fluctuating landscape and modify …
Driven diffusive systems with disorder
M Barma - Physica A: Statistical Mechanics and its Applications, 2006 - Elsevier
We discuss recent work on the static and dynamical properties of the asymmetric exclusion
process, generalized to include the effect of disorder. We study in turn, random disorder in …
process, generalized to include the effect of disorder. We study in turn, random disorder in …
Fluctuation-dominated phase ordering at a mixed order transition
M Barma, SN Majumdar… - Journal of Physics A …, 2019 - iopscience.iop.org
Mixed order transitions are those which show a discontinuity of the order parameter as well
as a divergent correlation length at the transition (critical) point. We show that the behavior of …
as a divergent correlation length at the transition (critical) point. We show that the behavior of …
Effect of relative timescale on a system of particles sliding on a fluctuating energy landscape: Exact derivation of product measure condition
C Khamrai, S Chatterjee - Physical Review E, 2024 - APS
We consider a system of hardcore particles advected by a fluctuating potential energy
landscape, whose dynamics is in turn affected by the particles. Earlier studies have shown …
landscape, whose dynamics is in turn affected by the particles. Earlier studies have shown …
Clustering, intermittency, and scaling for passive particles on fluctuating surfaces
We show that a scaling approach successfully characterizes clustering and intermittency in
space and time, in systems of noninteracting particles driven by fluctuating surfaces. We …
space and time, in systems of noninteracting particles driven by fluctuating surfaces. We …
Ordered phases in coupled nonequilibrium systems: Static properties
We study a coupled driven system in which two species of particles are advected by a
fluctuating potential energy landscape. While the particles follow the potential gradient, each …
fluctuating potential energy landscape. While the particles follow the potential gradient, each …
Light and heavy particles on a fluctuating surface: Bunchwise balance, irreducible sequences, and local density-height correlations
We study the early-time and coarsening dynamics in the light-heavy model, a system
consisting of two species of particles (light and heavy) coupled to a fluctuating surface …
consisting of two species of particles (light and heavy) coupled to a fluctuating surface …