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SUMMARY:Ya-Wen Sun (UCAS Beijing)
DTSTART:20201124T150000Z
DTEND:20201124T160000Z
DTSTAMP:20260423T023051Z
UID:HoloTube/26
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/HoloTube/26/
 ">Topological modes in hydrodynamics and holography</a>\nby Ya-Wen Sun (UC
 AS Beijing) as part of HoloTube: Applied holography webinars\n\n\nAbstract
 \nIn this talk I will show that gapless modes in relativistic hydrodynamic
 s could become topologically nontrivial by weakly breaking the conservatio
 n of energy momentum tensor in a specific way. This system has topological
  semimetal-like crossing nodes in the spectrum of hydrodynamic modes that 
 require the protection of a special combination of translational and boost
  symmetries in two spatial directions. One possible origin for the non-con
 servation terms of the energy momentum tensor is an external gravitational
  field which could be generated by a specific coordinate transformation fr
 om the flat spacetime. This suggests that topologically trivial modes coul
 d become topologically nontrivial by being observed in a special non-inert
 ial reference frame. Finally a holographic realization of this system will
  be introduced.\n
LOCATION:https://researchseminars.org/talk/HoloTube/26/
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