Abstract
Abstract
We investigate axion-like particles (ALPs) in the context of asymptotically safe gravity-matter systems. The ALP-photon interaction, which facilitates experimental searches for ALPs, is a dimension-5-operator. Quantum fluctuations of gravity lower its scaling dimension, and the ALP-photon coupling can become asymptotically free or even asymptotically safe. However, quantum fluctuations of gravity need to be strong to overcome the canonical scaling and this strong-gravity regime is in tension with the weak-gravity bound in asymptotic safety. Thus, we tentatively conclude that fundamental ALPs can likely not be accommodated in asymptotically safe gravity-matter systems. In turn, an experimental discovery of an ALP would thus shed valuable light on the quantum nature of gravity.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference215 articles.
1. P. Arias, D. Cadamuro, M. Goodsell, J. Jaeckel, J. Redondo and A. Ringwald, WISPy Cold Dark Matter, JCAP 06 (2012) 013 [arXiv:1201.5902] [INSPIRE].
2. A. Ringwald, Exploring the Role of Axions and Other WISPs in the Dark Universe, Phys. Dark Univ. 1 (2012) 116 [arXiv:1210.5081] [INSPIRE].
3. R. Essig et al., Working Group Report: New Light Weakly Coupled Particles, in Community Summer Study 2013: Snowmass on the Mississippi, (2013) [arXiv:1311.0029] [INSPIRE].
4. A. Ringwald, Axions and Axion-Like Particles, in 49th Rencontres de Moriond on Electroweak Interactions and Unified Theories, (2014), pp. 223–230 [arXiv:1407.0546] [INSPIRE].
5. I.G. Irastorza and J. Redondo, New experimental approaches in the search for axion-like particles, Prog. Part. Nucl. Phys. 102 (2018) 89 [arXiv:1801.08127] [INSPIRE].
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