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DTSTAMP:20260425T051653Z
UID:68149db97ff24791822730@ist.ac.at
DTSTART:20250514T103000
DTEND:20250514T120000
DESCRIPTION:Speaker: Aritra Bose\nhosted by Carl Goodrich\nAbstract: Contin
 uum models of scalar active matter with an effective diffusivity vanishing
  above a given density\, i.e. a diffusivity edge\, have previously been sh
 own to undergo a condensation transition akin to that of Bose-Einstein whe
 n confined in a stable potential [1\,2\,3\,4]. Here\, we explore the effec
 t of stochasticity on the nature of this phase transition\, as well as the
  ensuing dynamic features of the ground state occupation. Though systemati
 c numerical experiments\, we uncover the existence of anomalously large fl
 uctuations of the condensate density\, characterised by non-trivial expone
 nts in the condensation phase. For a particular class of scalar models sat
 isfying an effective fluctuation-dissipation theorem\, our results are val
 idated by an exact mapping to a microscopic zero-range process.1. R. Goles
 tanian\, Phys. Rev. E 100\, 010601(R) (2019)2. B. Mahault and R. Golestani
 an\, New J. Phys. 22\, 063045 (2020)3. F. Meng\, D. Matsunaga\, B. Mahault
  and R. Golestanian\, Phys. Rev. Lett. 126\, 078001 (2021)4. J. Berx\, A. 
 Bose\, R. Golestanian and B. Mahault\, Euro. Phys. Lett. 142\, 67004 (2023
 )
LOCATION:Sunstone Bldg / Ground floor / Big Seminar Room A / 27 seats (I23.
 EG.102)\, ISTA
ORGANIZER:cpetz@ist.ac.at
SUMMARY:Aritra Bose: Anomalous condensate fluctuations in scalar active mat
 ter with a diffusivity edge
URL:https://talks-calendar.ista.ac.at/events/5746
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