Abstract
We study one loop quantum gravitational corrections to the long range force induced by the exchange of a massless scalar between two massive scalars. The various diagrams contributing to the flat space S matrix are evaluated in a general covariant gauge, and we show that dependence on the gauge parameters cancels at a point considerably before forming the full S matrix, which is unobservable in cosmology. It is possible to interpret our computation as a solution to the effective field equations - which could be done even in cosmology - but taking account of quantum gravitational corrections from the source and from the observer.
| Original language | English |
|---|---|
| Article number | 104029 |
| Journal | Physical Review D |
| Volume | 96 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2017 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
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Deducing cosmological observables from the S matrix. / Miao, Shun-Pei; Prokopec, T.; Woodard, R. P.
In: Physical Review D, Vol. 96, No. 10, 104029, 01.01.2017.Research output: Contribution to journal › Article
TY - JOUR
T1 - Deducing cosmological observables from the S matrix
AU - Miao, Shun-Pei
AU - Prokopec, T.
AU - Woodard, R. P.
PY - 2017/1/1
Y1 - 2017/1/1
N2 - We study one loop quantum gravitational corrections to the long range force induced by the exchange of a massless scalar between two massive scalars. The various diagrams contributing to the flat space S matrix are evaluated in a general covariant gauge, and we show that dependence on the gauge parameters cancels at a point considerably before forming the full S matrix, which is unobservable in cosmology. It is possible to interpret our computation as a solution to the effective field equations - which could be done even in cosmology - but taking account of quantum gravitational corrections from the source and from the observer.
AB - We study one loop quantum gravitational corrections to the long range force induced by the exchange of a massless scalar between two massive scalars. The various diagrams contributing to the flat space S matrix are evaluated in a general covariant gauge, and we show that dependence on the gauge parameters cancels at a point considerably before forming the full S matrix, which is unobservable in cosmology. It is possible to interpret our computation as a solution to the effective field equations - which could be done even in cosmology - but taking account of quantum gravitational corrections from the source and from the observer.
UR - http://www.scopus.com/inward/record.url?scp=85037109635&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85037109635&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.96.104029
DO - 10.1103/PhysRevD.96.104029
M3 - Article
AN - SCOPUS:85037109635
VL - 96
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 10
M1 - 104029
ER -