64 citations · 188 across the 5 of their papers we have counts for
5 papers
Perturbations of global monopoles as a black hole's hair
Hiroshi Watabe, Takashi Torii
We study the stability of a spherically symmetric black hole with a global monopole hair. Asymptotically the spacetime is flat but has a deficit solid angle which depends on the va…
The stability of the shell of D6-D2 branes in a supergravity solution
K. Maeda, T. Torii, M. Narita +1
The stability of the shell of wrapped D6-branes on K3 is investigated from the point of view of supergravity. We first construct an effective energy-momentum tensor for the shell u…
Preheating with non-minimally coupled scalar fields in higher-curvature inflation models
S. Tsujikawa, K. Maeda, T. Torii
In higher-curvature inflation models (), we study a parametric preheating of a scalar field coupled non-minimally to a spacetime curvature (). In the cas…
No-scalar hair conjecture in asymptotic de-Sitter spacetime
T. Torii, K. Meeda, M. Narita
We discuss the no-hair conjecture in the presence of a cosmological constant. For the firststep the real scalar field is considered as the matter field and the spacetime is assumed…
Non-Abelian Black Holes and Catastrophe Theory II: Charged Type
T. Tachizawa, K. Maeda, T. Torii
We reanalyze the gravitating monopole and its black hole solutions in the Einstein-Yang-Mills-Higgs system and we discuss their stabilities from the point of view of catastrophe th…