18 citations · 24 across the 3 of their papers we have counts for
3 papers
Decoupling limits in multi-sector supergravities
Ana Achúcarro, Sjoerd Hardeman, Johannes M. Oberreuter +2
Conventional approaches to cosmology in supergravity assume the existence of multiple sectors that only communicate gravitationally. In principle these sectors decouple in the limi…
The everpresent eta-problem: knowledge of all hidden sectors required
Sjoerd Hardeman, Johannes M. Oberreuter, Gonzalo A. Palma +2
We argue that the eta-problem in supergravity inflation cannot be solved without knowledge of the ground state of hidden sectors that are gravitationally coupled to the inflaton. I…
A worldsheet perspective on string inflation
Koenraad Schalm, Ted van der Aalst
We investigate the constraints of slow-roll inflation on the string worldsheet. A general gravity-matter set-up is used in which the worldsheet consists of an abstract CFT coupled…