Adiabatic regularization of the graviton stress-energy tensor in de Sitter space-time

@article{Finelli2004AdiabaticRO,
  title={Adiabatic regularization of the graviton stress-energy tensor in de Sitter space-time},
  author={Fabio Finelli and G. Marozzi and Gian Paolo Vacca and Giovanni Venturi},
  journal={Physical Review D},
  year={2004},
  volume={71},
  pages={023522-023522}
}
We study the renormalized energy-momentum tensor of gravitons in a de Sitter space-time. After canonically quantizing only the physical degrees of freedom, we adopt the standard adiabatic subtraction used for massless minimally coupled scalar fields as a regularization procedure and find that the energy density of gravitons in the E(3) invariant vacuum is proportional to H{sup 4}, where H is the Hubble parameter, but with a positive sign. According to this result the scalar expansion rate… 
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References

SHOWING 1-10 OF 26 REFERENCES

Phys

  • Rev. D 31, 710
  • 1985

Phys

  • Rev.D 34, 2286
  • 1986

Phys

  • Rev. D 32, 3136 (1985); B. Allen and A. Folacci, Phys. Rev. D 35, 3771
  • 1987

Quantum Fields in Curved Space

This book presents a comprehensive review of the subject of gravitational effects in quantum field theory. Although the treatment is general, special emphasis is given to the Hawking black hole…

Phys

  • Rev. D 60, 064004
  • 1999

Phys

  • Rev. 135, B271 (1964); see J. A. Wheeler, Phys. Rev. 97, 511
  • 1955

Phys

  • Rev. 183, 1057
  • 1969

Phys

  • 32, 2828 (1991) [Erratum-ibid. 33, 1932
  • 1992

Phys

  • Rev. D 48, 567
  • 1993

Phys

  • Rev. D 69, 123508
  • 2004