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- The University of TokyoJP330 papers
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21 papers · 2 filters
Large N reduction for Chern-Simons theory on S^3
Goro Ishiki, Shinji Shimasaki, Asato Tsuchiya
We study a matrix model which is obtained by dimensional reduction of Chern-Simon theory on S^3 to zero dimension. We find that expanded around a particular background consisting o…
On the full quantum trispectrum in multi-field DBI inflation
Shuntaro Mizuno, Frederico Arroja, Kazuya Koyama
We compute the leading order connected four-point function of the primordial curvature perturbation coming from the four-point function of the fields in multi-field DBI inflation m…
Universal description of viscoelasticity with foliation preserving diffeomorphisms
Tatsuo Azeyanagi, Masafumi Fukuma, Hikaru Kawai +1
A universal description is proposed for generic viscoelastic systems with a single relaxation time. Foliation preserving diffeomorphisms are introduced as an underlying symmetry wh…
Chiral Primordial Gravitational Waves from a Lifshitz Point
Tomohiro Takahashi, Jiro Soda
We study primordial gravitational waves produced during inflation in quantum gravity at a Lifshitz point proposed by Hoava. Assuming power-counting renormalizabilit…
On String Theory Duals of Lifshitz-like Fixed Points
Tatsuo Azeyanagi, Wei Li, Tadashi Takayanagi
We present type IIB supergravity solutions which are expected to be dual to certain Lifshitz-like fixed points with anisotropic scale invariance. They are expected to describe a cl…
Lorentz boost and non-Gaussianity in multi-field DBI-inflation
Shuntaro Mizuno, Frederico Arroja, Kazuya Koyama +1
We show that higher-order actions for cosmological perturbations in the multi-field DBI-inflation model are obtained by a Lorentz boost from the rest frame of the brane to the fram…