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SUMMARY:Justin Feng (CENTRA\, IST)
DTSTART:20210722T133000Z
DTEND:20210722T143000Z
DTSTAMP:20260423T052836Z
UID:CENTRA/51
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CENTRA/51/">
 Self-collision of a portal wormhole</a>\nby Justin Feng (CENTRA\, IST) as 
 part of CENTRA Seminar\n\n\nAbstract\nPortals (also known as loop based th
 in shell wormholes or gates in the literature) are wormholes supported by 
 a single loop of negative mass\, negative tension cosmic string and have t
 he property that the geometry is everywhere flat except at the cosmic stri
 ng. In this talk\, I describe the construction\, topology\, and smoothing 
 of portals\, and consider what happens if one attempts to collide the mout
 hs of a portal\, which naively resembles a topology changing process. For 
 a simple anisotropic fluid\, it is found that in general relativity\, port
 al mouths do not experience an acceleration as they are brought together\,
  and a curvature singularity forms in the limit that the separation distan
 ce vanishes.\n
LOCATION:https://researchseminars.org/talk/CENTRA/51/
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