52 citations · 416 across the 38 of their papers we have counts for
40 papers
Persistence Properties of a Phase-ordering System with Competing Dynamics
Shubham Thwal, Suman Majumder
We investigate the persistence properties during phase ordering in the two-dimensional () Ising model evolving under competing nonconserved spin-flip and conserved spin-exchan…
Effect of Cylindrical Confinement on the Collapse Dynamics of a Polymer
Shubham Thwal, Suman Majumder
Structure and dynamics of a polymer under confinement gets significantly altered due to the imposed geometric restrictions. Using molecular dynamics simulations, here, we explore t…
Domain Growth and Aging in a Phase Separating Binary Fluid Confined Inside a Nanopore
Saikat Basu, Suman Majumder, Raja Paul +1
Hydrodynamics is known to have strong effects on the kinetics of phase separation. There exist open questions on how such effects manifest in systems under confinement. Here, we ha…
Nonequilibrium Dynamics of the Helix-Coil Transition in Polyalanine
Maximilian Conradi, Henrik Christiansen, Suman Majumder +2
In this work, the nonequilibrium pathways of the collapse of the helix-forming biopolymer polyalanine are investigated. To this end, the full time evolution of the helix-coil trans…
Influence of Thermostats on the Dynamics of the Helix-Coil Transition
Maximilian Conradi, Henrik Christiansen, Suman Majumder +2
We present results from all-atom molecular dynamics simulations for the nonequilibrium dynamics of the collapse and helix-coil transition in polyalanine. In particular, we compare…
Scale-free cluster-cluster aggregation during polymer collapse
Suman Majumder, Saikat Chakraborty
An extended polymer collapses to form a globule when subjected to a quench below the collapse transition temperature. The process begins with the formation of clusters of monomers…
Finite-Size Effects in Aging can be Interpreted as Sub-Aging
Henrik Christiansen, Suman Majumder, Wolfhard Janke +1
Systems brought out of equilibrium through a rapid quench from a disordered initial state into an ordered phase undergo physical aging in the form of phase-ordering kinetics, with…
Anomalous Conformations and Dynamics of Active Block Copolymers
Suman Majumder, Subhajit Paul
Heterogeneous distribution of passive and active domains in the chromosome plays a crucial role for its dynamic organization within the cell nucleus. Motivated by that here we inve…
Temperature and Solvent Viscosity Tune the Intermediates During the Collapse of a Polymer
Suman Majumder, Henrik Christiansen, Wolfhard Janke
Dynamics of a polymer chain in solution gets significantly affected by the temperature and the frictional forces arising due to solvent viscosity. Here, using an explicit solvent f…
Thermodynamically Stable Knots in Semiflexible Polymers
Wolfhard Janke, Suman Majumder, Martin Marenz +1
Semiflexible polymers are widely used as a paradigm for understanding structural phases in biomolecules including folding of proteins. Here, we compare bead-spring and bead-stick v…
Spontaneous Micro Flocking of Active Inertial Particles without Alignment Interaction
Subhajit Paul, Suman Majumder, Wolfhard Janke
Observing spontaneous velocity ordering or flocking during motility induced phase separation (MIPS) in a system of spherical active Brownian particles without alignment interaction…
Interplay of phase segregation and chemical reaction: Crossover and effect on growth laws
Shubham Thwal, Suman Majumder
By combining the nonconserved spin-flip dynamics driving ferromagnetic ordering with the conserved Kawasaki-exchange dynamics driving phase segregation, we perform Monte Carlo simu…
Activity Induced Enhanced Diffusion of a Polymer in Poor Solvent
Suman Majumder, Subhajit Paul, Wolfhard Janke
By means of Brownian dynamics simulations we study the steady-state dynamic properties of a flexible active polymer in a poor solvent condition. Our results show that the effective…
Segregation disrupts the Arrhenius behavior of an isomerization reaction
Shubham Thwal, Suman Majumder
Co-existence of phase segregation and \emph{interconversion} or \emph{isomerization} reaction among molecular species leads to fascinating structure formation in biological and che…
Disentangling Growth and Decay of Domains During Phase Ordering
Suman Majumder
Using Monte Carlo simulations we study the phase ordering dynamics of a \textit{multi}-species system modeled via the prototype -state Potts model. In such a \textit{multi}-spec…
Activity Mediated Globule to Coil Transition of a Flexible Polymer in Poor Solvent
Subhajit Paul, Suman Majumder, Wolfhard Janke
Understanding the role of self-propulsion on the conformational properties of active filamentous objects has relevance in biology. In this context, we consider a flexible bead-spri…
Role of temperature and alignment activity on kinetics of coil-globule transition of a flexible polymer
Subhajit Paul, Suman Majumder, Wolfhard Janke
We study the nonequilibrium kinetics during the coil-globule transition of a flexible polymer chain with active beads after a quench from good to poor solvent condition using molec…
Multivariate cluster point process to quantify and explore multi-entity configurations: Application to biofilm image data
Suman Majumder, Brent A. Coull, Jessica L. Mark Welch +4
Clusters of similar or dissimilar objects are encountered in many fields. Frequently used approaches treat the central object of each cluster as latent. Yet, often objects of one o…
Effects of Alignment Activity on the Collapse Kinetics of a Flexible Polymer
Subhajit Paul, Suman Majumder, Subir K Das +1
Dynamics of various biological filaments can be understood within the framework of active polymer models. Here we consider a bead-spring model for a flexible polymer chain in which…
Knots are Generic Stable Phases in Semiflexible Polymers
Suman Majumder, Martin Marenz, Subhajit Paul +1
Semiflexible polymer models are widely used as a paradigm to understand structural phases in biomolecules including folding of proteins. Since stable knots are not so common in rea…
Estimating intervention effects on infectious disease control: the effect of community mobility reduction on Coronavirus spread
Andrew Giffin, Wenlong Gong, Suman Majumder +3
Understanding the effects of interventions, such as restrictions on community and large group gatherings, is critical to controlling the spread of COVID-19. Susceptible-Infectious-…
Motion of a Polymer Globule with Vicsek-like Activity: From Super-diffusive to Ballistic Behavior
Subhajit Paul, Suman Majumder, Wolfhard Janke
Via molecular dynamics simulation with Langevin thermostat we study the structure and dynamics of a flexible bead-spring active polymer model after a quench from good to poor solve…
Kryging: Geostatistical analysis of large-scale datasets using Krylov subspace methods
Suman Majumder, Yawen Guan, Brian J. Reich +1
Analyzing massive spatial datasets using Gaussian process model poses computational challenges. This is a problem prevailing heavily in applications such as environmental modeling,…
Zero-Temperature Coarsening in the Two-Dimensional Long-Range Ising Model
Henrik Christiansen, Suman Majumder, Wolfhard Janke
We investigate the nonequilibrium dynamics following a quench to zero temperature of the non-conserved Ising model with power-law decaying long-range interactions $\propto 1/r^{d+σ…