9 citations · 28 across the 13 of their papers we have counts for
14 papers
Persistently Non-Gaussian Metastable Liquids
Vinay Vaibhav, Tamoghna Das, Suman Dutta
Particles undergoing Fickian diffusion within smooth energy landscapes exhibit Gaussian statistics. However, this Gaussian behavior is often elusive in complex liquids, where parti…
What do the fast dynamics tell us about aggregation?
Tamoghna Das
Two typical morphology of two-dimensional aggregates are considered: compact crystalline clusters and string-like non-compact conformations. Simulated trajectories of both types of…
Quantifying `local softness' in a simple liquid
Tamoghna Das
Mutual information between local stress and local non-affine deformation is proposed as a collective field variable quantifying the {\em local softness} of soft materials. The liqu…
Secure communication over generalised quantum multiple access channels
Tamoghna Das, Karol Horodecki, Robert Pisarczyk
We investigate the security of generalized quantum multiple-access channels. We provide the formula for the achievable rate region of secure communication in the scenario of two se…
Positional information as a universal predictor of freezing
Tamoghna Das, Tsvi Tlusty
Variation of positional information, measured by the two-body excess entropy , is studied across the liquid-solid equilibrium transition in a simple two-dime…
Acceleration of enzymatic catalysis by active hydrodynamic fluctuations
Ashwani Kr. Tripathi, Tamoghna Das, Govind Paneru +2
The cellular milieu is teeming with biochemical nano-machines whose activity is a strong source of correlated non-thermal fluctuations termed active noise. Essential elements of th…
Collective dynamics in two-dimensional aggregations with competing interactions
Tamoghna Das, M. M. Bandi
A generic aggregate forming system in two dimensions (2D) is studied using canonical ensemble constant temperature molecular dynamics simulation. The aggregates form due to the com…
Three-state structural heterogeneity in a model two dimensional fluid
Tamoghna Das, Jack F. Douglas
Three structural populations with distinct average mobility are identified within an equilibrium two-dimensional Lennard-Jones fluid simulated via molecular dynamics at a constant…
Quantifying Structural Dynamic Heterogeneity in a Dense Two-dimensional Equilibrium Liquid
Tamoghna Das, Jack F. Douglas
We investigate the local structural fluctuations of a model equilibrium fluid with an aim of better understanding the structural basis of locally heterogeneous dynamics identified…
Transition in heterogeneous dynamics across the morphological hierarchy in two-dimensional aggregates
Tamoghna Das, T. Lookman, M. M. Bandi
Two-dimensional (2D) particulate aggregates formed due to competing interactions exhibit a range of non-equilibrium steady state morphologies from finite-size compact crystalline s…
A Minimal description of morphological hierarchy in two-dimensional aggregates
Tamoghna Das, T. Lookman, M. M. Bandi
A dimensionless parameter is proposed to describe a hierarchy of morphologies in two-dimensional (2D) aggregates formed due to varying competition between short-range attractio…
Pre-yield non-affine fluctuations and a hidden critical point in strained crystals
Tamoghna Das, Saswati Ganguly, Surajit Sengupta +1
A crystalline solid exhibits thermally induced localised {\em non-affine} droplets in the absence of external stress. Here we show that upon an imposed shear, the size of these dro…
Non-affine heterogeneities and droplet fluctuations in an equilibrium crystalline solid
Tamoghna Das, Surajit Sengupta, Madan Rao
We show, using molecular dynamics simulations, that a two-dimensional Lennard-Jones solid is subject to droplet fluctuations characterized by {\em non-affine} deviations from local…
Structural Transitions in A Crystalline Bilayer : The Case of Lennard Jones and Gaussian Core Models
Tamoghna Das, Surajit Sengupta, Subhasis Sinha
We study structural transitions in a system of interacting particles arranged as a crystalline bilayer, as a function of the density and the distance between the layers. As…