Zobrazeno 1 - 10
of 191
pro vyhledávání: '"Inagaki, Tomohiro"'
Publikováno v:
Journal of Cosmology and Astroparticle Physics, 2024(09), 011
Assuming static and spherically symmetric stars with perfect fluid matter, we used realistic equations of state to study neutron stars in covariant $f(Q)$ gravity. The structure profiles and properties of neutron stars such as mass, radius and compac
Externí odkaz:
http://arxiv.org/abs/2407.03669
Autor:
Inagaki, Tomohiro, Yoshioka, Naoki
Non-thermal fermionic particle production is investigated in Einstein-Cartan modified gravity with a modified Holst term and non-minimal couplings between the spin connection and a fermion. By using the auxiliary field method, the theory is rewritten
Externí odkaz:
http://arxiv.org/abs/2406.14982
Autor:
Kitadono, Yoshio, Inagaki, Tomohiro
The nonlinear massive plane wave solution of the classical scalar field in the Higgs potential is revisited to study the mass generation and particle creation. In particular, by assuming that the Higgs system is in the slightly excited state in early
Externí odkaz:
http://arxiv.org/abs/2405.00967
Autor:
Takeuchi, Kota, Inagaki, Tomohiro
Gauge theory compactified on an orbifold is defined by gauge symmetry, matter contents, and boundary conditions. There are equivalence classes (ECs), each of which consists of physically equivalent boundary conditions. We propose the powerful necessa
Externí odkaz:
http://arxiv.org/abs/2404.19411
Autor:
Takeuchi, Kota, Inagaki, Tomohiro
In five- and six-dimensional $U(N)$ and $SU(N)$ gauge theories compactified on $S^1/Z_2$ and $T^2/Z_3$ orbifolds, we propose a new method to classify the equivalence classes (ECs) of boundary conditions (BCs) wihtout depending on the structure of gau
Externí odkaz:
http://arxiv.org/abs/2401.09809
Autor:
Inagaki, Tomohiro, Taniguchi, Masahiko
We investigate the quintessential inflation in the logarithmic Cartan $F(R)$ gravity. A small logarithmic modification of the general relativity has the potential to introduce both inflation and dark energy. We evaluate the time evolution of the Univ
Externí odkaz:
http://arxiv.org/abs/2312.11776
The chiral symmetry is explicitly and spontaneously broken in a strongly interacting massive fermionic system. We study the chiral symmetry restoration in massive four-fermion interaction models with increasing temperature and chemical potential. At
Externí odkaz:
http://arxiv.org/abs/2306.00470
Publikováno v:
JCAP 09 (2023) 014
The cosmology of the $F(R)$ gravity rebuilding by the Cartan formalism is investigated. This is called Cartan $F(R)$ gravity. The well-known $F(R)$ gravity has been introduced to extend the standard cosmology, e.g. to explain the cosmological acceler
Externí odkaz:
http://arxiv.org/abs/2304.14769
Autor:
Inagaki, Tomohiro, Taniguchi, Masahiko
We investigate the scalar mode quadrupole radiation of gravitational waves in $F(R)$ modified gravity. In $F(R)$ gravity a massive scalar mode appears in the gravitational waves. We find explicit expressions for the quadrupole radiation and the energ
Externí odkaz:
http://arxiv.org/abs/2302.02734
Autor:
Takeuchi, Kota, Inagaki, Tomohiro
We study the arbitrariness of boundary conditions (BCs) on $S^1/Z_2$ brane-world models with the gauge group $U(N)$. The BCs are chosen independently on the branes and the bulk in this model. There are numerous choices for BCs in general, but some of
Externí odkaz:
http://arxiv.org/abs/2301.12938