17 citations · 72 across the 12 of their papers we have counts for
13 papers
Activity-induced emergent flatness, instabilities and pattern formation in fluid membranes
Debayan Jana, Astik Haldar, Abhik Basu
We show that microscopically inversion-asymmetric, permeable active fluid membranes are statistically flat and effectively inversion-symmetric at large scales. Their fluctuations a…
Death by mutants: unusual multicritical dynamics in a two-species model for absorbing state transitions
Astik Haldar, Abhik Basu
We explore the phases and active-to-absorbing state phase transitions (AAPT) in a two-species model, where the species A and its mutant B are {\em asymmetrically} or {\em nonrecipr…
Anisotropy can make a moving active fluid membrane rough or crumpled
Debayan Jana, Astik Haldar, Abhik Basu
We present a hydrodynamic theory of anisotropic and inversion-asymmetric moving active permeable fluid membranes. These are described by an anisotropic Kardar-Parisi-Zhang equation…
Availability versus carrying capacity: Phases of asymmetric exclusion processes competing for finite pools of resources
Astik Haldar, Parna Roy, Erwin Frey +1
We address how the interplay between the finite availability and carrying capacity of particles at different parts of a spatially extended system can control the steady state curre…
Logarithmic or algebraic: roughening of an active Kardar-Parisi-Zhang surface
Debayan Jana, Astik Haldar, Abhik Basu
The Kardar-Parisi-Zhang (KPZ) equation sets the universality class for growing and roughening of nonequilibrium surfaces without any conservation law and nonlocal effects. We argue…
Anomalous Collective Dynamics of Auto-Chemotactic Populations
Jasper van der Kolk, Florian Rasshofer, Richard Swiderski +3
While the role of local interactions in nonequilibrium phase transitions is well studied, a fundamental understanding of the effects of long-range interactions is lacking. We study…
Disorders can induce continuously varying universal scaling in driven systems
Astik Haldar, Abhik Basu
We elucidate the nature of universal scaling in disordered driven models. We in particularly explore the intriguing possibility of whether coupling with quenched disorders can lead…
Active XY model on a substrate: Density fluctuations and phase ordering
Astik Haldar, Apurba Sarkar, Swarnajit Chatterjee +1
We explore the generic long wavelength properties of an active XY model on a substrate, consisting of collection of nearly phase-ordered active XY spins in contact with a diffusing…
Mobility-induced order in active XY spins on a substrate
Astik Haldar, Apurba Sarkar, Swarnajit Chatterjee +1
We elucidate that the nearly phase-ordered active XY spins in contact with a conserved, diffusing species on a substrate can be stable. For wide-ranging model parameters, it has st…
Universal properties of the Kardar-Parisi-Zhang equation with quenched columnar disorders
Astik Haldar
Inspired by the recent results on totally asymmetric simple exclusion processes on a periodic lattice with short-ranged quenched hopping rates [A. Haldar, A. Basu, Phys Rev Researc…
Asymmetric exclusion processes with fixed resources: Reservoir crowding and steady states
Astik Haldar, Parna Roy, Abhik Basu
We study the nonequilibrium steady states of an asymmetric exclusion process (TASEP) coupled to a reservoir of unlimited capacity. We elucidate how the steady states are controlled…
Marching on a rugged landscape: Universality in disordered asymmetric exclusion processes
Astik Haldar, Abhik Basu
We develop the hydrodynamic theory for number conserving asymmetric exclusion processes with short-range random quenched disordered hopping rates, which is one-dimensional Kardar-P…
Flow can order: Phases of live XY spins in two dimensions
Astik Haldar, Abhik Basu
We present the hydrodynamic theory of active XY spins coupled with flow fields, for systems both having and or lacking number conservation in two dimensions (2D). For the latter, w…