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SUMMARY:The role of nolinearity and fluctuations in the non-reciprocal Cah
 n-Hilliard model - Suropriya Saha (Max Planck Institute for Dynamics and S
 elf Organisation)
DTSTART:20240614T104000Z
DTEND:20240614T113000Z
UID:TALK214762@talks.cam.ac.uk
DESCRIPTION:Non-reciprocal interactions between scalar fields that represe
 nt the concentrations of two active species are known to break the parity 
 and time-reversal (PT) symmetries of the equilibrium state\, as manifested
  in the emergence of travelling waves. In my talk I will discuss various a
 spects of the Non-reciprocal Cahn-Hilliard model. I will&nbsp\;discuss&nbs
 p\;the role of an active pressure in determining the dynamical steady stat
 e.&nbsp\;I will explore the notion of nonlinear non-reciprocity and consid
 er a model in which the non-reciprocal interactions can depend on the loca
 l values of the scalar fields. For generic cases where such couplings exis
 t\, we observe the emergence of spatiotemporal chaos in the steady-state a
 ssociated with a local restoration of PT symmetry in fluctuating spatial d
 omains\, which leads to the coexistence of oscillating densities and phase
 -separated droplets that are spontaneously created and annihilated. Finall
 y I will discuss the role of fluctuations in the ordered 'polar state' tha
 t arises in the system.
LOCATION:Seminar Room 1\, Newton Institute
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