Perturbation spectrum in inflation with cutoff

By Achim Kempf, Jens C. Niemeyer. 2001

179 citations recorded by the source corpus.

It has been pointed out that the perturbation spectrum predicted by inflation may be sensitive to a natural ultraviolet cutoff, thus potentially providing an experimentally accessible window to aspects of Planck scale physics. A priori, a natural ultraviolet cutoff could take any form, but a fairly general classification of possible Planck scale cutoffs has been given. One of those categorized cutoffs, also appearing in various studies of quantum gravity and string theory, has recently been implemented into the standard inflationary scenario. Here, we continue this approach by investigating its effects on the predicted perturbation spectrum. We find that the size of the effect depends sensitively on the scale separation between cutoff and horizon during inflation.

Subfields: Astronomy and Astrophysics, Atomic and Molecular Physics, and Optics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/354e999022bd883726f9b25e94c2a01a9992c48c

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Citations in the corpus

Inflation, holography, and the choice of vacuum in de Sitter space (2002, background): “In several recent works the rationality of this assumption has been questioned, [2-26].”
Analogue Gravity (2005, background): “This year saw more applications of analogue-inspired ideas to cosmological inflation [107, 263, 262, 207, 275], to neutron star cores [66], and to the cosmological constant [414, 416].”
Signatures of short distance physics in the cosmic microwave background (2002, background): “3 The authors in [9] speculated that this boundary condition was the same as their adiabatic condition.”
A Note on inflation and transPlanckian physics (2002, background): “, [12] the corrections are argued to be of size (”
Initial Conditions for Inflation (2002, background): “The effect is of order H/M , where M is the scale of new physics, which is larger than the H(2)/M(2) effects discussed in [6,3].”