• Corpus ID: 13853236

An effective theory of initial conditions in inflation

  title={An effective theory of initial conditions in inflation},
  author={Hael Collins and Richard Holman},
  journal={arXiv: High Energy Physics - Theory},
We examine the renormalization of an effective theory description of a general initial state set in an isotropically expanding space-time, which is done to understand how to include the effects of new physics in the calculation of the cosmic microwave background power spectrum. The divergences that arise in a perturbative treatment of the theory are of two forms: those associated with the properties of a field propagating through the bulk of space-time, which are unaffected by the choice of the… 

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3 " Integrating Out " versus " Matching " 19 3.
  • Roy. Soc. Lond. A 360, 117
  • 1978
  • Rev. D 71, 085009
  • 2005
JCAP 0505
  • 009
  • 2005
  • Rev. D 68, 124012 (2003) [hep-th/0306028]; H. Collins and M. R. Martin , Phys. Rev. D70, 084021
  • 2004
JHEP 0302
  • 048 (2003) [hep-th/0210233]; C. P. Burgess, J. M. Cline and R. Holman, JCAP0310, 004
  • 2003
  • Re v D 64, 103502 (2001); R. Easther, B. R. Greene, W. H. Kinney and G. Shiu, Phys. Rev. D 67, 063508 (2003); G. Shiu and I. Wasserman, Phys. Lett. B 536, 1 (2002); R. Easther, B. R. Greene, W. H. Kinney and G. Shiu, Phys. Rev. D 66, 023518
  • 2002
  • Shiu and J. P. van der Schaar, JCAP0502, 001 (2005) [hep-th/0411217]; K. Schalm, G. Shiu and J. P. van der Schaar, AIP Conf. Proc. 743, 362
  • 2005
  • Shiu and J. P. van der Schaar, JHEP 0404, 076 (2004) [hep-th/0401164]; B. Greene, K. Schalm, J. P. van der Schaar and G. Shiu, eConf C041213, 0001
  • 2004
  • 051 (2003) [hep-th/0307026]; F. Larsen and R. McNees, JHEP 0407, 062
  • 2004