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Hidden sector and gravity
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DOI：10.1016/j.physletb.2019.135152.png)
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Abstract
En 中文
In this paper, we consider a generic hidden sector which interacts only gravitationally with Standard Model particles. We show that quantum gravity leads to operators which can be probed with fifth force type experiments. The Eot-Wash torsion pendulum experiment implies that the masses of any scalar field or any massive spin-2 field that couples with the usual gravitational strength to the energy-momentum tensor of the Standard Model must be larger than 10(-3) eV. This has interesting consequences for models of dark matter which posit very light scalar fields. Dark matter must be heavier than 10(-3) eV if it is a scalar field or a massive spin-2 field. (C) 2019 The Author(s). Published by Elsevier B.V.
Keywords:
SCHWINGER-DEWITT TECHNIQUE
GENERAL-RELATIVITY
QUANTUM
2ND-ORDER
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