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Gravitational production of superheavy baryonic and dark matter in quintessential inflation: nonconformally coupled case
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The gravitational production of superheavy dark matter is studied in the context of quintessential inflation. The superheavy particles, whose decay products are baryonic matter and are the responsible for the reheating of the universe after the end of the inflationary period, are not conformally coupled with gravity. On the contrary, dark matter is assumed to be conformally coupled with gravity. We show that the viability of these scenarios requires the mass of the superheavy dark matter to be greater than 8 x 10^{15} GeV.
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A note on the gravitational dark matter production
The study connects the reheating temperature to the dark matter mass in two gravitational production scenarios and derives narrow viable mass ranges for each.
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