51 citations · 686 across the 50 of their papers we have counts for
20 papers · 1 filter
Continuously varying exponents in the distribution of waiting times in the symmetric exclusion process on a percolation cluster
Arpan Chatterjee, Kabir Ramola, Deepak Dhar
We study the waiting-time distribution of hard-core interacting particles in the symmetric exclusion process on one- and two-dimensional lattices with side branches attached to eac…
Critical behavior and crossover scaling in the Light-Heavy model
Shilpa Prakash, Mustansir Barma, Kabir Ramola
The Light-Heavy (LH) model involves two species of particles (light and heavy) coupled with a fluctuating surface (described by tilts). The dynamics include the inherent diffusion…
Fermions on a 1D lattice: localized sources and sinks with dephasing
Elka Bhattacharya, Sushant Saryal, Soumya Ghosh +1
We study a general one-dimensional spinless fermionic system subject to a localized source, sink, and bulk dephasing. Within the Lindblad framework, we compute the time evolution o…
Energy-Weighted Site Percolation in Two Dimensions
Sayan Sircar, Kabir Ramola
We study a generalization of two-dimensional site percolation by assigning an energy cost to bonds between nearest-neighbor occupied sites. This leads to a competitio…
Diffusive noise controls early stages of genetic demixing
Rashmiranjan Bhutia, Stephy Jose, Prasad Perlekar +1
Theoretical descriptions of the stepping-stone model, a cornerstone of spatial population genetics, have long overlooked diffusive noise arising from migration dynamics. We derive…
Exact Fluctuating Hydrodynamics of the Scaled Light-Heavy Model
Shilpa Prakash, Mustansir Barma, Kabir Ramola
We study the exact fluctuating hydrodynamics of the scaled Light-Heavy model (sLH), in which two species of particles (light and heavy) interact with a fluctuating surface. This mo…
Current fluctuations in finite-sized one-dimensional non-interacting passive and active systems
Arup Biswas, Stephy Jose, Arnab Pal +1
We investigate the problem of effusion of particles initially confined in a finite one-dimensional box of size . We study both passive as well active scenarios, involving non-in…
Effect of initial conditions on current fluctuations in non-interacting active particles
Stephy Jose, Alberto Rosso, Kabir Ramola
We investigate the effect of initial conditions on the fluctuations of the integrated density current across the origin () up to a given time in a one-dimensional system o…
Generalized disorder averages and current fluctuations in run and tumble particles
Stephy Jose, Alberto Rosso, Kabir Ramola
We present exact results for the fluctuations in the number of particles crossing the origin up to time in a collection of non-interacting run and tumble particles in one dimen…
Current fluctuations in an interacting active lattice gas
Stephy Jose, Rahul Dandekar, Kabir Ramola
We study the fluctuations of the integrated density current across the origin up to time in a lattice model of active particles with hard-core interactions. This model is amena…
Active Random Walks in One and Two Dimensions
Stephy Jose, Dipanjan Mandal, Mustansir Barma +1
We investigate active lattice walks: biased continuous time random walks which perform orientational diffusion between lattice directions in one and two spatial dimensions. We stud…
Displacement correlations in disordered athermal networks
Debankur Das, Pappu Acharya, Kabir Ramola
We derive exact results for correlations in the displacement fields in near-crystalline athermal systems in two dimensions. We analyze the…
Light and heavy particles on a fluctuating surface: Bunchwise balance, irreducible sequences and local density-height correlations
Samvit Mahapatra, Kabir Ramola, Mustansir Barma
We study the early time and coarsening dynamics in the Light-Heavy model, a system consisting of two species of particles ( and ) coupled to a fluctuating surface (de…
Columnar order and Ashkin-Teller criticality in mixtures of hard-squares and dimers
Kabir Ramola, Kedar Damle, Deepak Dhar
We show that critical exponents of the transition to columnar order in a {\em mixture} of dimers and hard-squares on the square lattice {\em depends on th…
Branching Brownian Motion Conditioned on Particle Numbers
Kabir Ramola, Satya N. Majumdar, Gregory Schehr
We study analytically the order and gap statistics of particles at time for the one dimensional branching Brownian motion, conditioned to have a fixed number of particles at $t…
Universal Order and Gap Statistics of Critical Branching Brownian Motion
Kabir Ramola, Satya N. Majumdar, Gregory Schehr
We study the order statistics of one dimensional branching Brownian motion in which particles either diffuse (with diffusion constant ), die (with rate ) or split into two pa…
High-Activity Perturbation Expansion for the Hard Square Lattice Gas
Kabir Ramola, Deepak Dhar
We study a system of particles with nearest and next-nearest-neighbour exclusion on the square lattice (hard squares). This system undergoes a transition from a fluid phase at low…
Spin-1 Kitaev model in one dimension
Diptiman Sen, R. Shankar, Deepak Dhar +1
We study a one-dimensional version of the Kitaev model on a ring of size N, in which there is a spin S > 1/2 on each site and the Hamiltonian is J \sum_i S^x_i S^y_{i+1}. The cases…
Classical Heisenberg spins on a hexagonal lattice with Kitaev couplings
Samarth Chandra, Kabir Ramola, Deepak Dhar
We analyse the low temperature properties of a system of classical Heisenberg spins on a hexagonal lattice with Kitaev couplings. For a lattice of 2N sites with periodic boundary c…
Fragment Formation in Biased Random Walks
Kabir Ramola
We analyse a biased random walk on a 1D lattice with unequal step lengths. Such a walk was recently shown to undergo a phase transition from a state containing a single connected c…