117 citations · 203 across the 8 of their papers we have counts for
3 papers · 1 filter
Where does curvaton reside? Differences between bulk and brane frames
François Larrouturou, Shinji Mukohyama, Ryo Namba +1
Some classes of inflationary models naturally introduce two distinct metrics/frames, and their equivalence in terms of observables has often been put in question. D-brane inflation…
Is the DBI scalar field as fragile as other -essence fields?
Shinji Mukohyama, Ryo Namba, Yota Watanabe
Caustic singularity formations in shift-symmetric -essence and Horndeski theories on a fixed Minkowski spacetime were recently argued. In dimensions, this singularity is the…
Ghost inflation and de Sitter entropy
Sadra Jazayeri, Shinji Mukohyama, Rio Saitou +1
In the setup of ghost condensation model the generalized second law of black hole thermodynamics can be respected under a radiatively stable assumption that couplings between the f…