Quantum Corrections to the Stochastic Gravitational Wave Background - INSPIRE

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Quantum Corrections to the Stochastic Gravitational Wave Background

Denis Comelli
(
- INFN, Ferrara
)
,
Maicol Di Giambattista
(
- L'Aquila U. and
- Gran Sasso
)
,
Luigi Pilo
(
- L'Aquila U. and
- Gran Sasso
)
,
Rocco Rollo
(
- INFN, Florence and
- Florence U.
)

Feb 10, 2022

13 pages

e-Print:

2202.04968 [hep-th]

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Abstract: (arXiv)

We study 1-loop corrections to the primordial stochastic background of gravitational waves produced during inflation. While in single-clock, at the leading order in slow-roll, quantum corrections keep the amplitude scale-free this is not the case when the pattern of symmetry breaking is different. In particular, when spatial diffeomorphisms are also broken during inflation as for solid inflation, a log-running in the external momentum is generated. We relate the appearance of a log-running to the spontaneous breaking of dilatation invariance. The running could be instrumental to distinguish single-clock from alternative models of inflation in future high sensitivity CMB polarisation and GWs experiments.

Note:

Latex, 13 pages

gravitational radiation: background
correction: quantum
inflation: model
invariance: dilation
background: stochastic
slow-roll approximation
spontaneous symmetry breaking
loop integral: 1

References(41)

Figures(0)

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