82 citations · 564 across the 85 of their papers we have counts for
62 papers · 1 filter
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…
Re-entrance or monotonic: How chemotaxis controls pattern formation
Mintu Karmakar, Abhik Basu
We investigate pattern formation in generic two-species reaction-diffusion systems with mutual chemotaxis. We show that tuning the chemotaxis strength can give rise to striking non…
Correlated disorder versus correlated noise: Ordering in active systems
Sudip Mukherjee, Abhik Basu
Can quenched disorder generate ordering in driven systems? Using a recently proposed hydrodynamic model, we show that sufficiently long-ranged quenched disorder can induce long-ran…
Quenched activity induces nonuniversal scaling in nonreciprocal XY Models and surfaces
Sudip Mukherjee, Abhik Basu
Active XY models and active surfaces are two paradigmatic nonequilibrium systems with distinct microscopic origins. We show that the hydrodynamic theories for a quenched-disordered…
Stationary densities in a weakly nonconserving asymmetric exclusion processes with finite resources
Sourav Pal, Abhik Basu
Asymmetric exclusion process (TASEP) along a one-dimensional (1D) open channel sets the paradigm for 1D driven models and nonequilibrium phase transitions in open 1D models. Inspir…
Stationary densities and delocalized domain walls in asymmetric exclusion processes competing for finite pools of resources
Sourav Pal, Parna Roy, Abhik Basu
We explore the stationary densities and domain walls in the steady states of a pair of asymmetric exclusion processes (TASEP) antiparallelly coupled to two particle reservoirs with…
Universality of shocks in conserved driven single-file motions with bottlenecks
Sourav Pal, Abhik Basu
Driven single-file motion, in which particles move unidirectionally along one-dimensional channels, sets the paradigm for wide variety of one-dimensional directed movements, rangin…
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…
Rough or crumpled: Strong coupling phases of a generalized Kardar-Parisi-Zhang surface
Debayan Jana, Abhik Basu
We study a generalized Kardar-Parisi-Zhang (KPZ) equation [Jana et al., Phys. Rev. E 109, L032104 (2024)] that sets the paradigm for universality in roughening of growing nonequili…
Nonuniform asymmetric exclusion process: Stationary densities and domain walls
Sudip Mukherjee, Abhik basu
We compute the stationary densities in totally asymmetric exclusion processes (TASEP) with open boundary conditions and spatially nonuniform hopping rates. The stationary densities…
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…
Flat or crumpled: states of active symmetric membranes
Sudip Mukherjee, Abhik Basu
We set up and study the hydrodynamic theory for inversion-symmetric active fluid and tethered membranes. For some choices of the activity parameter, such membranes are stable and d…
Distributed fixed resources exchanging particles: Phases of an asymmetric exclusion process connected to two reservoirs
Sourav Pal, Parna Roy, Abhik Basu
We propose and study a conceptual one-dimensional model to explore how the combined interplay between fixed resources and particle exchanges between different parts of an extended…
Availability, storage capacity, and diffusion: Stationary states of an asymmetric exclusion process connected to two reservoirs
Sourav Pal, Parna Roy, Abhik Basu
We explore how the interplay of finite availability, carrying capacity of particles at different parts of a spatially extended system and particle diffusion between them control th…
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…
Universal scaling regimes in rotating fluid turbulence
Abhik Basu, Jayanta K Bhattacharjee
We analyse the scaling properties of the energy spectra in fully developed incompressible turbulence in forced, rotating fluids in three dimensions (3D), which are believed to be c…
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…
Stiffening or softening of elastic media: Anomalous elasticity near phase transitions
Sudip Mukherjee, Abhik Basu
We present the general theory of Ising transitions in isotropic elastic media with vanishing thermal expansion. By constructing a minimal model with appropriate spin-lattice coupli…
Rough or crumpled: Phases in kinetic growth with surface relaxation
Sudip Mukherjee, Abhik Basu
We show that generic kinetic growth processes with surface relaxations can exhibit a new crumpled phase with short-range orientational order at dimensions . A sufficiently str…
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…
Statistical mechanics of phase transitions in elastic media with vanishing thermal expansion
Sudip Mukherjee, Abhik Basu
We consider the elastic theory for Ising transitions in an isotropic elastic medium in the zero thermal expansion (ZTE) limit. We use this theory to study the nature of the fluctua…