Consistency relations and degeneracies in (non)commutative patch inflation

Abstract

The consistency equations of patch inflation are considered in a next-to-leading-order slow-roll (SR) expansion. Some general aspects of braneworld degeneracy are pointed out, both with an ordinary scalar field and a Born-Infeld tachyon. The discussion is then extended to the maximally symmetric noncommutative case.

Comments: 6 pages; v3: version to appear in Phys. Lett. B