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SUMMARY:Energy in spacetimes with negative cosmological constant - Virinch
 i Rallabhandi (University of Edinburgh)
DTSTART:20251104T160000Z
DTEND:20251104T170000Z
UID:TALK237040@talks.cam.ac.uk
CONTACT:Professor Maciej Dunajski
DESCRIPTION:This talk will discuss global and quasilocal properties of ene
 rgy in spacetimes with negative cosmological constant using spinor methods
 . In the first half of the talk\, a general positive energy theorem is dev
 eloped for asymptotically\, locally AdS spacetimes with boundary geometry 
 admitting compact cross-sections with parallel or Killing spinors. Various
  examples will be used to illustrate the effect of the boundary geometry. 
 In the second half of the talk\, a new notion of quasilocal mass will be d
 efined for generic\, compact\, 2D\, spacelike surfaces in 4D spacetimes wi
 th negative cosmological constant. The new quasilocal mass is based on wor
 k for vanishing cosmological constant by Penrose and Dougan & Mason and wi
 ll be shown to have a number of physically desirable properties.
LOCATION:CMS MR11
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