Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Mustansir Barma"'
Publikováno v:
Physical Review Research, Vol 2, Iss 4, p 043279 (2020)
We study the early-time and coarsening dynamics in the light-heavy model, a system consisting of two species of particles (light and heavy) coupled to a fluctuating surface (described by tilt fields). The dynamics of particles and tilts are coupled t
Externí odkaz:
https://doaj.org/article/2ad9af4330514b549e68f72d7d6702ab
Publikováno v:
Physical Review Research, Vol 2, Iss 2, p 023412 (2020)
How should dispersal strategies be chosen to increase the likelihood of survival of a species? We obtain the answer for the spatially extended versions of three well-known models of two competing species with unequal diffusivities. Though identical a
Externí odkaz:
https://doaj.org/article/058f491120594cb397da0c2aec73bcef
Autor:
Jesal Kotak, Mustansir Barma
We study the competition between field-induced transport and trapping in a disordered medium by studying biased random walks on random combs and the bond-diluted Bethe lattice above the percolation threshold. While it is known that the drift velocity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c980a44abffaefcff199a8c72ae8fa0b
http://arxiv.org/abs/2204.05357
http://arxiv.org/abs/2204.05357
We investigate active lattice walks: biased continuous time random walks which perform orientational diffusion between lattice directions in one and two spatial dimensions. We study the occupation probability of an arbitrary site on the lattice in on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2170344b0e1dd3bf81127b4191ec214
http://arxiv.org/abs/2202.02995
http://arxiv.org/abs/2202.02995
Autor:
null Sumedha, Mustansir Barma
We obtain a representation of the free energy of an XY model on a fully connected graph with spins subjected to a random crystal field of strength $D$ and with random orientation $\alpha$. Results are obtained for an arbitrary probability distributio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e7c0a44fcc62586773b2b5d03f9c18e
Publikováno v:
Physical Review Research. 2
How should dispersal strategies be chosen to increase the likelihood of survival of a species? We obtain the answer for the spatially extended versions of three well-known models of two competing species with unequal diffusivities. Though identical a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a593dde8ed002809f08bca7415193591
https://doi.org/10.1103/physrevresearch.2.023412
https://doi.org/10.1103/physrevresearch.2.023412
We study the effect of rapid quench to zero temperature in a model with competing interactions, evolving through conserved spin dynamics. In a certain regime of model parameters, we find that the model belongs to the broader class of kinetically cons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b60466b77c48741d368076e381d18d0
http://arxiv.org/abs/2004.00342
http://arxiv.org/abs/2004.00342
Autor:
null Sumedha, Mustansir Barma
Publikováno v:
Journal of Physics A: Mathematical and Theoretical. 55:095001
We use large deviation theory to obtain the free energy of the XY model on a fully connected graph on each site of which there is a randomly oriented field of magnitude $h$. The phase diagram is obtained for two symmetric distributions of the random
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c6595a7bab3bbab1c6fac07c75eb8a8
https://doi.org/10.1088/1751-8121/ac4b8b
https://doi.org/10.1088/1751-8121/ac4b8b
The recently developed formalism of nonlinear fluctuating hydrodynamics (NLFH) has been instrumental in unraveling many new dynamical universality classes in coupled driven systems with multiple conserved quantities. In principle, this formalism requ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f460f899e0d6dd82800a4716059a16ac
http://arxiv.org/abs/1909.01696
http://arxiv.org/abs/1909.01696
Autor:
Prachi Bisht, Mustansir Barma
We study pattern formation, fluctuations and scaling induced by a growth-promoting active walker on an otherwise static interface. Active particles on an interface define a simple model for energy consuming proteins embedded in the plasma membrane, r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f2fc48acc09ff8bf305d9c5d9b498693