Rejuvenating the hope of a swampland consistent inflated multiverse with tachyonic inflation in the high energy RS-II Braneworld

Understand

The swampland conjectures from string theory have had some really interesting implications on cosmology, in particular on inflationary models.

• Some models of inflation have been shown to be incompatible with these criterion while some have been shown to be severely fine tuned, with most of these problems arising in single field inflationary models in a General relativistic cosmology.
• Recent works have although optimistically shown that single field models in more general cosmologies can be consistent with these conjectures and hence there is an optimism that not all such models lie in the swampland.
• However a paradigm of inflation which has been shown to not be perfectly okay with the conjectures is eternal inflation.