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SUMMARY:Mathematical Physics Seminar (November 11th) – Marzena H Szymańs
 ka (UCL) – Universal phase dynamics in fluids of light and living matter
DESCRIPTION:\nTitle: Universal phase dynamics in fluids of light and living
  matter\n\n\n\n\nAbstract:\nFluids of light offer a setting for exploring 
 how coherence and collective order emerge away from thermal equilibrium. C
 ontinuous pumping and particle loss can produce behaviour beyond the famil
 iar equilibrium picture of Bose condensation and superfluidity. I will dis
 cuss the phase dynamics of exciton–polariton and photon condensates\, fo
 cusing on the interplay between Berezinskii–Kosterlitz–Thouless (BKT) 
 physics and the Kardar–Parisi–Zhang (KPZ) universality class\, familia
 r from fluctuating interfaces. A central feature is the compact nature of 
 the phase\, which allows vortices whose interactions and dynamics can chan
 ge qualitatively away from equilibrium. I will examine how driving\, aniso
 tropy and coupling between polarisation components shape this behaviour.\n
 \nI will then present recent results for photon condensates in dye-filled 
 microcavities\, showing how dissipation can support vortex binding and the
  characteristic features of an equilibrium BKT transition in finite system
 s\, even without Hamiltonian interactions. Changing the photon–molecule 
 detuning connects this regime to non-equilibrium behaviour\, with distinct
  consequences for coherence and superfluid response. Finally\, I will disc
 uss KPZ phase dynamics and the Kibble–Zurek mechanism for spiral defect 
 formation in cell populations\, linking fluids of light and living matter 
 through their shared driven-dissipative nature.\n\n\n\n\n\nNote: This semi
 nar will be happening in-person only. \n\n\nLocation: Huxley 145\, 13.00-
 14.00.\n
URL:https://www.imperial.ac.uk/events/216526/mathematical-physics-seminar-n
 ovember-11th-marzena-h-szymanska-ucl-tbd/
DTSTART;TZID=Europe/London:20261111T130000
DTEND;TZID=Europe/London:20261111T140000
LOCATION:Huxley 145\, Huxley Building\, South Kensington Campus\, Imperial 
 College London\, London\, SW7 2AZ\, United Kingdom
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