54 citations · 176 across the 9 of their papers we have counts for
4 papers · 1 filter
Inverted Hybrid Inflation as a solution to gravitino problems in Gravity Mediation
H. Nakajima, Y. Shinbara
It was recently found that the decay of inflaton and the SUSY breaking field produces many gravitinos in the gravity mediation scenario. These discoveries led to an exclusion of ma…
R-invariant New Inflation Model vs Supersymmetric Standard Model
M. Ibe, Y. Shinbara
We revisit the implications of the R-invariant New Inflation model to the supersymmetric standard model in light of recent discussion of gravitino production processes by the decay…
Supersymmetric Tuned Inflation
K. -I. Izawa, Y. Shinbara
We address an issue what kind of tuning realizes a flat potential for inflaton in supergravity. We restrict ourselves to the case that inflationary dynamics is not affected by sepa…
Solutions to large B and L breaking in the Randall-Sundrum model
H. Nakajima, Y. Shinbara
The stability of proton and neutrino masses are discussed in the Randall-Sundrum model. We show that relevant operators should be suppressed, if the hierarchical Yukawa matrices ar…