期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
卷 22, 期 12, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218271813420145
关键词
General relativity; quantum gravity; effective theory
资金
- STFC [ST/J000477/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/J000477/1] Funding Source: researchfish
In this paper, we discuss an effective theory for quantum gravity and discuss the bounds on the parameters of this effective action. In particular, we show that measurement in pulsars binary systems are unlikely to improve the bounds on the coefficients of the R-2 and R mu nu R mu nu terms obtained from probes of Newton's potential performed on Earth. Furthermore, we argue that if the coefficients of these terms are induced by quantum gravity, they should be at most of order unity since R-2 and R mu nu R mu nu are dimension four operators. The same applies to the nonminimal coupling of the Higgs boson to the Ricci scalar.
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