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SUMMARY:Exceptional wormholes in scalar-tensor gravity
DTSTART;VALUE=DATE-TIME:20261030T085000Z
DTEND;VALUE=DATE-TIME:20261030T090500Z
DTSTAMP;VALUE=DATE-TIME:20261022T224440Z
UID:indico-contribution-6270@cern.ch
DESCRIPTION:Speakers: Kirill Bronnikov (VNIIMS)\nIn the Bergmann-Wagoner-N
 ordtvedt class of scalar-tensor theories\, well known are wormhole solutio
 ns existing in the phantom sector of the theory. Exceptional wormholes exi
 st in the canonical sector owing to the phenomenon of conformal continuati
 on\, the situation where the Einstein frame manifold maps to only a region
  of the Jordan frame manifold\, and the latter is smoothly continued to a 
 region with negative effective gravitational coupling. We discuss the exis
 tence conditions and the stability properties of exceptional wormholes\, i
 n particular\, those with and without an electromagnetic field in the Bran
 s-Dicke theory: it is shown how the electromagnetic field plays a stabiliz
 ing role.\n\nhttps://indico.particle.mephi.ru/event/626/contributions/6270
 /
LOCATION:Sevastopol Hotel
URL:https://indico.particle.mephi.ru/event/626/contributions/6270/
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