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The string dilation and a least coupling principle
Open accessAbstract
Abstract It is pointed out that string-loop modifications of the low-energy matter couplings of the dilation may provide a mechanism for fixing the vacuum expectation value of a massless dilation in a way which is naturally compatible with existing experimental data. Under a certain assumption of universality of the dilation coupling functions, the cosmological evolution of the graviton-dilaton-matter system is shown to drive the dilaton towards values where it decouples from matter (“Least Coupling Principle”). Quantitative estimates are given of the residual strength, at the present cosmological epoch, of the coupling to matter of the dilaton. The existence of a weakly coupled massless dilaton entails a large spectrum of small, but non-zero, observable deviations from general relativity. In particular, our results provide a new motivation for trying to improve by several orders of magnitude the various experimental tests of Einstein's Equivalence Principle (universality of free fall, constancy of the constants, etc.).
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Cites
Mach's Principle and a Relativistic Theory of Gravitation
Brans, C., & Dicke, R. H. (1961) · Physical Review · doi:10.1103/physrev.124.925 · Cited by 5,621
Gasser, J., & Leutwyler, H. (1982) · Physics Reports · doi:10.1016/0370-1573(82)90035-7 · Cited by 1,753
Some properties of O(32) superstrings
Witten, E. (1984) · Physics Letters B · doi:10.1016/0370-2693(84)90422-2 · Cited by 1,021
Ġ/G and a cosmological acceleration of gravitationally compact bodies
Nordtvedt, K. (1990) · Physical Review Letters · doi:10.1103/physrevlett.65.953 · Cited by 93
Cited by
The Confrontation between General Relativity and Experiment
Will, C. M. (2014) · Living Reviews in Relativity · doi:10.12942/lrr-2014-4 · Cited by 3,996
Theory and Experiment in Gravitational Physics
Will, C. M. (2018) · doi:10.1017/9781316338612 · Cited by 3,637
A test of general relativity using radio links with the Cassini spacecraft
Bertotti, B., Iess, L., & Tortora, P. (2003) · Nature · doi:10.1038/nature01997 · Cited by 2,017
Armendáriz-Picón, C., Damour, T., & Mukhanov, V. (1999) · Physics Letters B · doi:10.1016/s0370-2693(99)00603-6 · Cited by 1,846
Self-citationChameleon Fields: Awaiting Surprises for Tests of Gravity in Space
Khoury, J., & Weltman, A. (2004) · Physical Review Letters · doi:10.1103/physrevlett.93.171104 · Cited by 1,648
Metadata
- Authors
- Damour, T., & Polyakov, A. M.
- Venue
- Nuclear Physics B
- Publisher
- Elsevier BV
- Published
- 1994-07
- Volume
- 423
- Issue
- 2-3
- Pages
- 532-558
- ISSN
- 0550-3213 (ISSN-L)
- OpenAlex
- W1982489262
- Cited by
- 1,233
- References
- 4
- FWCI
- 15.88
- Type
- journal article
- Language
- en
- Open access
- green
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- Damour, T., & Polyakov, A. M. (1994). The string dilation and a least coupling principle. Nuclear Physics B. https://doi.org/10.1016/0550-3213(94)90143-0
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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