Teruaki Suyama

J-GLOBAL         Last updated: Aug 27, 2019 at 15:04
Teruaki Suyama
Tokyo Institute of Technology
School of Science
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Christophe Ringeval, Teruaki Suyama, Masahide Yamaguchi
   Mar 2019
We propose a simple but novel cosmological scenario where both the Planck
mass and the dark energy scale emerge from the same super-Hubble quantum
fluctuations of a non-minimally coupled ultra-light scalar field during
primordial inflation. The cu...
Soichiro Morisaki, Teruaki Suyama
   Nov 2018
An ultralight scalar field is one of the dark matter candidates. If it
couples with Standard Model particles, it oscillates mirrors in
gravitational-wave detectors and generates detectable signals. We study the
spectra of the signals taking into a...
Hayato Motohashi, Teruaki Suyama, Masahide Yamaguchi
JHEP 1806 (2018) 133      Apr 2018
We construct no-ghost theories of analytic mechanics involving arbitrary
higher-order derivatives in Lagrangian. It has been known that for theories
involving at most second-order time derivatives in the Lagrangian, eliminating
linear dependence o...
Misao Sasaki, Teruaki Suyama, Takahiro Tanaka, Shuichiro Yokoyama
   Jan 2018
This is a review article on the primordial black holes (PBHs), with
particular focus on the massive ones (Tex) which have not
evaporated by the present epoch by the Hawking radiation. By the detections of
gravitational waves b...
Tomohiro Nakama, Teruaki Suyama, Kazunori Kohri, Nagisa Hiroshima
Phys. Rev. D 97, 023539 (2018)      Dec 2017
We revisit constraints on small-scale primordial power from annihilation
signals from dark matter minihalos. Using gamma rays and neutrinos from
extragalactic minihalos and assuming the delta-function primordial spectrum, we
show the dependence of...