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SUMMARY:Noncommutative Quantum Cosmology and Black Holes - Catarina Bastos
  (IST/Lisbon)
DTSTART:20141205T130000Z
DTEND:20141205T140000Z
UID:TALK56119@talks.cam.ac.uk
CONTACT:Benson Way
DESCRIPTION:We consider a cosmological model based upon a non-canonical no
 ncommutative extension of the Heisenberg-Weyl algebra to address the therm
 odynamical stability and the singularity problem of both the Schwarzschild
  and the Kantowski-Sachs black holes.\nThe interior of the black hole is m
 odelled by a noncommutative extension of the Wheeler-DeWitt equation. We c
 ompute the temperature and entropy of a Kantowski-Sachs black hole and com
 pare our results with the Hawking values. Again\, the noncommutativity in 
 the momenta sector allows us to have a minimum in the potential\, which is
  relevant in order to apply the Feynman-Hibbs procedure. For Kantowski-Sac
 hs black holes\, the same model is shown to generate a non-unitary dynamic
 s\, predicting vanishing total probability in the neighborhood of the sing
 ularity. This result effectively regularizes the Kantowski-Sachs singulari
 ty and generalizes a similar result\, previously obtained for the case of 
 Schwarzschild black hole.
LOCATION:Pavilion B Potter Room (B1.19)
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