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11 papers · 2 filters
More on DBI action in 4D supergravity
Shuntaro Aoki, Yusuke Yamada
We construct a Dirac-Born-Infeld (DBI) action coupled to a two-form field in four dimensional supergravity. Our superconformal formulation of the action shows a uni…
Inflation from periodic extra dimensions
Tetsutaro Higaki, Yoshiyuki Tatsuta
We discuss a realization of a small field inflation based on string inspired supergravities. In theories accompanying extra dimensions, compactification of them with small radii is…
CP-violating phase on magnetized toroidal orbifolds
Tatsuo Kobayashi, Kenji Nishiwaki, Yoshiyuki Tatsuta
We study the CP-violating phase of the quark sector in the flavor model on with non-vanishing magnetic fluxes, where properties of possible origins…
Axion decay constants at special points in type II string theory
Masaki Honda, Akane Oikawa, Hajime Otsuka
We propose the mechanism to disentangle the decay constant of closed string axion from the string scale in the framework of type II string theory on Calabi-Yau manifold. We find th…
Vainshtein mechanism in massive gravity nonlinear sigma models
Katsuki Aoki, Shuntaro Mizuno
We study the stability of the Vainshtein screening solution of the massive/bi-gravity based on the massive nonlinear sigma model as the effective action inside the Vainshtein radiu…
Abelian tensor hierarchy in 4D conformal supergravity
Shuntaro Aoki, Tetsutaro Higaki, Yusuke Yamada +1
We consider Abelian tensor hierarchy in four-dimensional supergravity in the conformal superspace formalism, where the so-called covariant approach is used to antisymm…
Dynamical supersymmetry breaking on magnetized tori and orbifolds
Hiroyuki Abe, Tatsuo Kobayashi, Keigo Sumita
We construct several dynamical supersymmetry breaking (DSB) models within a single ten-dimensional supersymmetric Yang-Mills (SYM) theory, compactified on magnetized tori with or w…
Massive gravitons as dark matter and gravitational waves
Katsuki Aoki, Shinji Mukohyama
We consider the possibility that the massive graviton is a viable candidate of dark matter in the context of bimetric gravity. We first derive the energy-momentum tensor of the mas…
Dynamical angled brane
Kei-ichi Maeda, Kunihito Uzawa
We discuss the dynamical D-brane solutions describing any number of D-branes whose relative orientations are given by certain SU(2) rotations. These are the generalization of…
DBI action of real linear superfield in 4D conformal supergravity
Shuntaro Aoki, Yusuke Yamada
We construct the Dirac-Born-Infeld (DBI) action of a real linear multiplet in 4D supergravity. Based on conformal supergravity, we derive the general condition unde…
Tree-Unitarity and renormalizability in Lifshitz-scaling theory -- as a toy model of Hořava's gravity theory
Toshiaki Fujimori, Takeo Inami, Keisuke Izumi +1
We study tree-unitarity and renormalizability in Lifshitz-scaling theory, which is characterized by an anisotropic scaling between the spacial and time directions. Due to the lack…