Asymptotically safe inflation from quadratic gravity
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Asymptotically safe inflation from quadratic gravity. / Bonanno, Alfio; Platania, Alessia.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 750, 12.11.2015, p. 638-642.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Asymptotically safe inflation from quadratic gravity
AU - Bonanno, Alfio
AU - Platania, Alessia
N1 - Publisher Copyright: © 2015 The Authors.
PY - 2015/11/12
Y1 - 2015/11/12
N2 - Asymptotically Safe theories of gravity have recently received much attention. In this work we discuss a class of inflationary models derived from quantum-gravity modification of quadratic gravity according to the induced scaling around the non-Gaussian fixed point at very high energies. It is argued that the presence of a three dimensional ultraviolet critical surface generates operators of non-integer power of the type R2-θ/2 in the effective Lagrangian, where θ>0 is a critical exponent. The requirement of a successful inflationary model in agreement with the recent Planck 2015 data puts important constraints on the strength of this new type of couplings.
AB - Asymptotically Safe theories of gravity have recently received much attention. In this work we discuss a class of inflationary models derived from quantum-gravity modification of quadratic gravity according to the induced scaling around the non-Gaussian fixed point at very high energies. It is argued that the presence of a three dimensional ultraviolet critical surface generates operators of non-integer power of the type R2-θ/2 in the effective Lagrangian, where θ>0 is a critical exponent. The requirement of a successful inflationary model in agreement with the recent Planck 2015 data puts important constraints on the strength of this new type of couplings.
UR - http://www.scopus.com/inward/record.url?scp=84944111943&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2015.10.005
DO - 10.1016/j.physletb.2015.10.005
M3 - Journal article
AN - SCOPUS:84944111943
VL - 750
SP - 638
EP - 642
JO - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology
JF - Physics Letters B: Particle Physics, Nuclear Physics and Cosmology
SN - 0370-2693
ER -
ID: 388514319