Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session T00: Poster Session III (1pm-4pm PST)
1:00 PM,
Thursday, March 9, 2023
Room: Exhibit Hall (Forum Ballroom)
Sponsoring
Unit:
APS
Abstract: T00.00052 : Hydrodynamics with helical symmetry
Presenter:
Jack Farrell
(University of Colorado Boulder)
Author:
Jack Farrell
(University of Colorado Boulder)
only a linear combination of a rotation and translation is conserved in one of the three directions.
The hydrodynamic degrees of freedom consist of scalar densities (e.g. energy or charge) along with
two velocity fields transverse to the helical axis when the corresponding momenta are conserved.
Nondissipative hydrodynamic coefficients reminiscent of chiral vortical coefficients arise. We write
down microscopic Hamiltonian dynamical systems exhibiting helical symmetry, and we demonstrate
using kinetic theory that these systems will generically exhibit the new helical phenomena that we
predicted within hydrodynamics. We also confirm our findings using modern effective field theory
techniques for hydrodynamics. We postulate regimes where pinned cholesteric liquid crystals may
possess transport coefficients of a helical fluid, which appear to have been overlooked in previous
literature.
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