Nonequilibrium phase transitions, fluctuations and correlations in an active contractile polar fluid

Gowrishankar, Kripa and Rao, Madan Nonequilibrium phase transitions, fluctuations and correlations in an active contractile polar fluid. Soft Matter. pp. 1-9. ISSN 1744-6848

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Abstract

We study the patterning, fluctuations and correlations of an active polar fluid consisting of contractile polar filaments on a two dimensional substrate, using a hydrodynamic description. The steady states generically consist of arrays of inward pointing asters and show a continuous transition from a moving lamellar phase, a moving aster street to a stationary aster lattice with no net polar order. We next study the effect of a spatio-temporal athermal noise, parametrized by an active temperature TA, on the stability of the ordered phases. In contrast to its equilibrium counterpart, we find that the active crystal shows true long range order at low TA. On increasing TA, the asters dynamically remodel, concomitantly we find novel phase transitions characterized by bond-orientational and polar order upon “heating”

Item Type: Article
Authors: Gowrishankar, Kripa and Rao, Madan
Document Language:
Language
English
Uncontrolled Keywords: Nonequilibrium phase transitions, Equilibrium
Subjects: Natural Sciences > Life sciences; biology
Divisions: Azim Premji University > School of Arts and Sciences
Full Text Status: Restricted
Related URLs:
URI: http://publications.azimpremjiuniversity.edu.in/id/eprint/3582
Publisher URL: https://pubs.rsc.org/en/content/getauthorversionpd...

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