Philipp M. Kostka

activity

20082010

η

-Problem in Hybrid Inflation with Heisenberg Symmetry and Stabilized Modulus

67 citations · 272 across the 6 of their papers we have counts for

collaborators

Showing 2009 · hep-phShow all

2 papers · 2 filters

hep-ph2009★ 19 cited

Tribrid Inflation in Supergravity

Stefan Antusch, Koushik Dutta, Philipp M. Kostka

We propose a novel class of F-term hybrid inflation models in supergravity (SUGRA) where the $η$ -problem is resolved using either a Heisenberg symmetry or a shift symmetry of the K…

hep-ph2009★ 40 cited

SUGRA Hybrid Inflation with Shift Symmetry

Stefan Antusch, Koushik Dutta, Philipp M. Kostka

We propose a solution to the eta-problem in supergravity (SUGRA) hybrid inflation using a Nambu-Goldstone-like shift symmetry within a new class of models. The flatness of the tree…