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SUMMARY:Quantum Hydrodynamics - Dylan Reynolds\, ICTS Bangalore
DTSTART:20250819T130000Z
DTEND:20250819T143000Z
UID:TALK232795@talks.cam.ac.uk
CONTACT:Gaurav
DESCRIPTION:The complex behavior of interacting many-body quantum systems 
 continues to challenge contemporary researchers. In particular\, inferring
  edge dynamics from bulk properties\, which typically relies on a bulk-bou
 ndary correspondence\, remains an unsolved problem in many condensed matte
 r systems. Most edge theories are derived by integrating out bulk matter f
 ields\, leaving behind a theory that describes only the edge degrees of fr
 eedom. Alternatively\, when a suitable hydrodynamic theory for the system 
 is developed\, the relationship between bulk matter fields and edge dynami
 cs naturally follows from "classical" hydrodynamic boundary conditions\, s
 uch as no-penetration and no-stress.\n\nIf a system admits an effective th
 eory in terms of a single complex scalar\, such as an order parameter or w
 avefunction\, constructing a hydrodynamic theory becomes straightforward\,
  with boundary conditions arising directly from conservation laws. In this
  talk I will outline this general process and apply the formalism to three
  illustrative examples. Fractional Quantum Hall fluids offer insights into
  hydrodynamic Chern-Simons theories\, while polariton fluids motivate the 
 introduction of dissipative effects. Integer quantum Hall states of bosons
 \, representing a type of symmetry-protected topological phase\, are effec
 tively described by a two-fluid model which leads to a broader class of bo
 undary conditions and edge modes. Time permitting\, I will discuss how thi
 s framework may also shed light on turbulence in both quantum and classica
 l systems.\n
LOCATION:Seminar Room 3\, RDC
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