Low-temperature freeze-in lets gravity-mediated dark matter stay viable with heavy spin-two mediators and light dark matter, avoiding the tight constraints of the thermal relic picture.
Product CFTs, gravitational cloning, massive gravitons and the space of gravitational duals
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abstract
The question of graviton cloning in the context of the bulk/boundary correspondence is considered. It is shown that multi-graviton theories can be obtained from products of large-N CFTs. No more than one interacting massless graviton is possible. There can be however, many interacting massive gravitons. This is achieved by coupling CFTs via multi-trace marginal or relevant perturbations. The geometrical structure of the gravitational duals of such theories is that of product manifolds with their boundaries identified. The calculational formalism is described and the interpretation of such theories is discussed.
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Gravity-Mediated Dark Matter at a low reheating temperature
Low-temperature freeze-in lets gravity-mediated dark matter stay viable with heavy spin-two mediators and light dark matter, avoiding the tight constraints of the thermal relic picture.