78 citations · 838 across the 56 of their papers we have counts for
9 papers · 1 filter
Detection of the thermal component in GRB 160107A
Yuta Kawakubo, Takanori Sakamoto, Satoshi Nakahira +14
We present the detection of a blackbody component in GRB 160107A emission by using the combined spectral data of the CALET Gamma-ray Burst Monitor (CGBM) and the MAXI Gas Slit Came…
Ghostbusters in supergravity
Toshiaki Fujimori, Muneto Nitta, Keisuke Ohashi +1
supergravity is known to contain a ghost mode associated with higher-derivative terms if it contains with greater than two.We remove the ghost in supergravi…
Internal Supersymmetry and Small-field Goldstini
Diederik Roest, Pelle Werkman, Yusuke Yamada
The dynamics of the Goldstino mode of spontaneously broken supersymmetry is universal, being fully determined by the non-linearly realized symmetry. We investigate the small-field…
Ghost-free vector superfield actions in supersymmetric higher-derivative theories
Toshiaki Fujimori, Muneto Nitta, Keisuke Ohashi +2
We systematically construct ghost-free higher-derivative actions of Abelian vector supermultiplets in four-dimensional global supersymmetric theories. After giving a s…
Gravitino Problem in Inflation Driven by Inflaton-Polonyi Kähler Coupling
Fuminori Hasegawa, Kazunori Nakayama, Takahiro Terada +1
We discuss the cosmological gravitino problem in inflation models in which the inflaton potential is constructed from Kähler potential rather than superpotential: a representative…
Fibre Inflation and -attractors
Renata Kallosh, Andrei Linde, Diederik Roest +2
Fibre inflation is a specific string theory construction based on the Large Volume Scenario that produces an inflationary plateau. We outline its relation to -attractor models f…
Maximal Supersymmetry and B-Mode Targets
Renata Kallosh, Andrei Linde, Timm Wrase +1
Extending the work of Ferrara and one of the authors, we present dynamical cosmological models of -attractors with plateau potentials for . These models are mo…
Absence of U(1) Anomalous Superamplitudes in Supergravities
Daniel Z. Freedman, Renata Kallosh, Divyanshu Murli +2
We list all potential candidates for U(1) anomalous non-local 1-loop 4-point amplitudes and higher loop UV divergences in supergravities. The relevant chiral su…
Gravitino Problem in Minimal Supergravity Inflation
Fuminori Hasegawa, Kyohei Mukaida, Kazunori Nakayama +2
We study non-thermal gravitino production in the minimal supergravity inflation. In this minimal model utilizing orthogonal nilpotent superfields, the particle spectrum includes on…