TY - JOUR
T1 - De Sitter vacuum from R2 supergravity
AU - Hasegawa, Fuminori
AU - Yamada, Yusuke
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/11/19
Y1 - 2015/11/19
N2 - 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. Surprisingly, at the vacuum, the soft supersymmetry-breaking scale for the minimal supersymmetric standard model sector becomes the TeV scale; however, the gravitino mass scale becomes much higher than that of soft supersymmetry breaking. Such a hierarchical structure, which naturally avoids the gravitino problem, appears without introducing a new scale other than the inflation scale.
AB - 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. Surprisingly, at the vacuum, the soft supersymmetry-breaking scale for the minimal supersymmetric standard model sector becomes the TeV scale; however, the gravitino mass scale becomes much higher than that of soft supersymmetry breaking. Such a hierarchical structure, which naturally avoids the gravitino problem, appears without introducing a new scale other than the inflation scale.
UR - http://www.scopus.com/inward/record.url?scp=84948799862&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84948799862&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.92.105027
DO - 10.1103/PhysRevD.92.105027
M3 - Article
AN - SCOPUS:84948799862
SN - 1550-7998
VL - 92
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 10
M1 - 105027
ER -