78 citations · 838 across the 56 of their papers we have counts for
5 papers · 1 filter
Gravitational leptogenesis with kination and gravitational reheating
Kohei Kamada, Jun'ya Kume, Yusuke Yamada +1
We revisit the gravitational leptogenesis scenario in which the inflaton is coupled to gravity by the Chern-Simons term and the lepton asymmetry is generated through the gravitatio…
Horndeski model in nonlinearly realized supergravity
Yusuke Yamada, Jun'ichi Yokoyama
We construct the Horndeski Lagrangian within non-linearly realized supergravity. We will show that the bosonic part of the Horndeski Lagrangian can be realized. Gravitino naturally…
The supersymmetric anti-D3-brane action in KKLT
Niccolò Cribiori, Christoph Roupec, Timm Wrase +1
An anti-D3-brane plays a crucial role in the construction of semi-realistic cosmological models in string theory. Part of its action provides an uplift term that has been used to l…
Off-shell reduction in 4D conformal supergravity
Yusuke Yamada
We discuss reduction in four dimensional conformal supergravity. In particular, we keep the off-shell structure of supermultiplets (except hypermultiplets). As we will…
Simple Sinflaton-less -attractors
Renata Kallosh, Yusuke Yamada
We construct the simplest inflationary -attractor models in supergravity: it has only one scalar, the inflaton. There is no sinflaton since the inflaton belongs to an orthogonal…