Niladri Sarkar
Saha Institute of Nuclear Physics
21 Papers
39 Citations
Niladri Sarkar is an academic researcher from Saha Institute of Nuclear Physics. The author has contributed to research in topics: Phase transition & Membrane. The author has an hindex of 6, co-authored 21 publications.
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Papers
Generic instabilities in a fluid membrane coupled to a thin layer of ordered active polar fluid
Niladri Sarkar,Abhik Basu +1 more
TL;DR: An effective two-dimensional coarse-grained description is developed for the coupled system of a planar fluid membrane anchored to a thin layer of polar ordered active fluid below that demonstrates that activity or nonequilibrium drive of the active fluid makes such a system generically linearly unstable.
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Instabilities and diffusion in a hydrodynamic model of a fluid membrane coupled to a thin active fluid layer
Niladri Sarkar,Abhik Basu +1 more
TL;DR: A coarse-grained effective two-dimensional (2d hydrodynamic theory) theoretical model for a coupled system of a fluid membrane and a thin layer of a polar active fluid in its ordered state that is anchored to the membrane is constructed.
9
Active-to-absorbing-state phase transition in an evolving population with mutation.
TL;DR: The nontrivial critical scaling behavior and weak dynamic scaling near the AAPT that shows the significance of mutation are uncovered and the connection of this model with the well-known directed percolation universality class is highlighted.
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Fluctuations and symmetries in two-dimensional active gels.
Niladri Sarkar,Abhik Basu +1 more
TL;DR: This work sets up effective two-dimensional (2d coarse-grained hydrodynamic equations for the dynamics of thin active gels with polar or nematic symmetries and uses these to study the linear instabilities, calculate the correlation functions and the diffusion constant of a small tagged particle, and elucidate their dependences on the activity or nonequilibrium drive.
7
Generic nonequilibrium steady states in an exclusion process on an inhomogeneous ring
TL;DR: In this article, a totally asymmetric exclusion process on a ring with extended inhomogeneities is considered and the scaling properties of the fluctuations of LDWs and DDWs are explored.
6