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Articles by Deepak Dhar
Condensed Matter > Statistical Mechanics
[Submitted on 10 Nov 2026] Title:Stochastic evolution of interacting directed strings View a PDF of the paper titled Stochastic evolution of interacting directed strings, by S. S. Manna and Deepak Dhar View PDF HTML (experimental) Abstract:We study the stochastic dynamics of a system of $N$ polymer rings on an infinite cylinder with only excluded volume interaction, using simulations and also analytically.
The European Physical Journal B
Eur. Phys. J.
Subspace-restricted thermalization in a correlated-hopping model with strong Hilbert space fragmentation characterized by irreducible strings
We introduce a one-dimensional correlated-hopping model of spinless fermions in which a particle can hop between two neighboring sites only if the sites to the left and right of those two sites have different particle numbers. Using a bond-to-site mapping, this model involving four-site terms can be mapped to an assisted pair-flipping model involving only three-site terms. This model shows strong Hilbert space fragmentation.
Phases of the hard-plate lattice gas on a three-dimensional cubic lattice
Abstract We study the phase diagram of a lattice gas of 2×2×1 hard plates on the three-dimensional cubic lattice. Each plate covers an elementary plaquette of the cubic lattice, with the constraint that a site can belong to utmost one plate. We focus on the isotropic system, with equal fugacities for the three orientations of plates.
Many universality classes in an interface model restricted to non-negative heights
Abstract We present a simple one-dimensional stochastic model with three control parameters and a surprisingly rich zoo of phase transitions. At each (discrete) site x and time t, an integer n(x,t) satisfies a linear interface equation with added random noise. Depending on the control parameters, this noise may or may not satisfy the detailed balance condition, so that the growing interfaces are in the Edwards-Wilkinson or in the Kardar-Parisi-Zhang universality class.
Opinion: Banijay Asia CEO on why reality TV will always endure
Opinion: Banijay Asia CEO on why reality TV will always endure Reality shows have a unique way of captivating the masses. Based on real people, real stories, real emotions, and real drama, this genre connects with viewers on a deeper and emotional level, and continues to attract audiences year after year.
How is an Open Digital Ecosystem Opening Doors for Businesses to the Talent 3.0 World
Deepak Dhar is the founder and CEO of Bangalore-based Repute Networks Pvt. Ltd., an open talent network company. In his capacity, Deepak looks after the overall management and growth of the company. He aims to expand the business across India and the world. He wants to make Repute a household brand. With a B.Tech from the National Institute of Technology and an MBA from S. P.
Phase transition from nematic to high-density disordered phase in a system of hard rods on a lattice
Abstract A system of hard rigid rods of length k on hypercubic lattices is known to undergo two phase transitions when chemical potential is increased: from a low density isotropic phase to an intermediate density nematic phase, and on further increase to a high-density phase with no orientational order. In this paper, we argue that, for large k, the second phase transition is a first-order transition with a discontinuity in density in all dimensions greater than 1.
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