78 citations · 838 across the 56 of their papers we have counts for
7 papers · 1 filter
de Sitter vacuum from supergravity
Fuminori Hasegawa, Yusuke Yamada
We propose a supergravity model with a constrained curvature multiplet, which realizes the Starobinsky inflation and the de Sitter vacuum in the present universe simultaneously. Su…
N=1 superfield description of six-dimensional supergravity
Hiroyuki Abe, Yutaka Sakamura, Yusuke Yamada
We express the action of six-dimensional supergravity in terms of four-dimensional N=1 superfields, focusing on the moduli dependence of the action. The gauge invariance of the act…
Component action of nilpotent multiplet coupled to matter in 4 dimensional supergravity
Fuminori Hasegawa, Yusuke Yamada
We construct the component action of the system including an ordinary matter and a nilpotent multiplet in global and local supersymmetric framework. The higher dimensional operator…
Massive vector multiplet inflation with Dirac-Born-Infeld type action
Hiroyuki Abe, Yutaka Sakamura, Yusuke Yamada
We investigate the inflation model with a massive vector multiplet in a case that the action of the vector multiplet is extended to the Dirac-Born-Infeld (DBI) type one. We show th…
Impacts of supersymmetric higher derivative terms on inflation models in supergravity
Shuntaro Aoki, Yusuke Yamada
We show the effects of supersymmetric higher derivative terms on inflation models in supergravity. The results show that such terms generically modify the effective kinetic coeffic…
Matter coupled Dirac-Born-Infeld action in 4-dimensional N=1 conformal supergravity
Hiroyuki Abe, Yutaka Sakamura, Yusuke Yamada
We construct the Dirac-Born-Infeld action in the context of N=1 conformal supergravity and its possible extensions including matter couplings. We especially focus on the Volkov-Aku…
N=1 superfield description of vector-tensor couplings in six dimensions
Hiroyuki Abe, Yutaka Sakamura, Yusuke Yamada
We express supersymmetric couplings among the vector and the tensor multiplets in six dimensions (6D) in terms of N=1 superfields. The superfield description is derived from the in…