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Dynamical Stability of Six-dimensional Warped Flux Compactification
Hiroyuki Yoshiguchi, Shinji Mukohyama, Yuuiti Sendouda +1
We show the dynamical stability of a six-dimensional braneworld solution with warped flux compactification recently found by the authors. We consider linear perturbations around th…
Dynamics of Gravity in a Higgs Phase
Nima Arkani-Hamed, Hsin-Chia Cheng, Markus A. Luty +2
We investigate the universal low-energy dynamics of the simplest Higgs phase for gravity, `ghost condensation.' We show that the nonlinear dynamics of the `ghostone' field dominate…
Warped Flux Compactification and Brane Gravity
Shinji Mukohyama, Yuuiti Sendouda, Hiroyuki Yoshiguchi +1
We find a simple exact solution of 6-dimensional braneworld which captures some essential features of warped flux compactification, including a warped geometry, compactification, a…
Ghost Condensation and Gravity in Higgs Phase
Shinji Mukohyama
A tachyon is considered to be sick in the context of particle mechanics, but in field theory just indicates instability of a background. We consider a similar possibility that a gh…
Anti-D-brane as Dark Matter in Warped String Compactification
Shinji Mukohyama
It is pointed out that in the warped string compactification, motion of anti-D-branes near the bottom of a throat behaves like dark matter. Several scenarios for production of the…
Black Holes in the Ghost Condensate
Shinji Mukohyama
We investigate how the ghost condensate reacts to black holes immersed in it. A ghost condensate defines a hypersurface-orthogonal congruence of timelike curves, each of which has…