36 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Yamaguchi UniversityJP29 papers
- National Institute of TechnologyJP4 papers
- RIKEN Nishina CenterJP4 papers
- Kyushu UniversityJP3 papers
- National Institute of Technology, Kagoshima CollegeJP3 papers
- The University of OsakaJP3 papers
- Ibaraki UniversityJP2 papers
- Institute of Space and Astronautical ScienceJP2 papers
- Japan Aerospace Exploration AgencyJP2 papers
- National Astronomical Observatory of JapanJP2 papers
- National Institute of Information and Communications TechnologyJP2 papers
- Osaka Metropolitan UniversityJP2 papers
6 papers · 1 filter
Isothermal spheres in general relativity and Horava-type gravity
Nahomi Kan, Kiyoshi Shiraishi
We construct a toy model for isothermal spheres in Horava gravity, which includes Einstein's gravity if a parameter is appropriately chosen. The equations for the isothermal sphere…
Calculations in induced gravity from higher-derivative field theories
Nahomi Kan, Kiyoshi Shiraishi
In this paper, we investigate Einstein's gravity induced from higher-derivative scalar field theories. We develop an approach utilizing an effective theory of multiple fields for t…
Practical method for decomposing discretized breakup cross sections into components of each channel
Shin Watanabe, Kazuyuki Ogata, Takuma Matsumoto
Background: In the continuum-discretized coupled-channel method, a breakup cross section (BUX) is obtained as an admixture of several components of different channels in multi-chan…
Quantum fluctuation of stress tensor in a higher-derivative scalar field theory around a cosmic string
Nahomi Kan, Masashi Kuniyasu, Kiyoshi Shiraishi
We calculate the vacuum fluctuation of the stress tensor of a higher-derivative theory around a thin cosmic string. To this end, we adopt the method to obtain the stress tensor fro…
Discrete heat kernel, UV modified Green's function, and higher derivative theories
Nahomi Kan, Masashi Kuniyasu, Kiyoshi Shiraishi +1
We perform the UV deformation of the Green's function in free scalar field theory using a discrete heat kernel method. It is found that the simplest UV deformation based on the dis…
Vacuum expectation values in non-trivial background space from three types of UV improved Green's functions
Nahomi Kan, Masashi Kuniyasu, Kiyoshi Shiraishi +1
We evaluate the quantum expectation values in non-simply connected spaces by using UV improved Green's functions proposed by Padmanabhan, Abel, and Siegel. It is found that the res…