Zobrazeno 1 - 10
of 340
pro vyhledávání: '"Masatoshi Yamada"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 6, Pp 1-42 (2024)
Abstract We examine neutrino zeromode solutions on the electroweak Z-string and their effect on the stability of the string in the standard model and its extensions. We propose using topological invariants constructed from the momentum (and real) spa
Externí odkaz:
https://doaj.org/article/02146c66adac4bf2bbfeb40598195fee
Autor:
Junichi Haruna, Masatoshi Yamada
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 5, Pp 1-28 (2024)
Abstract Gradient Flow Exact Renormalization Group (GF-ERG) is a framework to define the renormalization group flow of Wilsonian effective action utilizing coarse-graining along the diffusion equations. We apply it for Scalar Quantum Electrodynamics
Externí odkaz:
https://doaj.org/article/de46f9f1e2a74c678f97432be70be312
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-33 (2023)
Abstract We compute scaling solutions of functional flow equations for quantum grav- ity in a general truncation with up to four derivatives of the metric. They connect the asymptotically free ultraviolet fixed point, which is accessible to perturbat
Externí odkaz:
https://doaj.org/article/730de2f05a474cc2ae11edbc7c697283
Publikováno v:
Frontiers in Marine Science, Vol 10 (2023)
The Lead 210 (210Pb) concentrations were determined to estimate the skeletal growth rates in the four species of precious corals including Japanese red coral (Corallium japonicum), pink coral (Pleurocorallium elatius), white coral (P. konojoi), and a
Externí odkaz:
https://doaj.org/article/7ddd88bde2474dbf89a283d65e9e38a4
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-72 (2022)
Abstract We compute non-perturbative flow equations for the couplings of quantum gravity in fourth order of a derivative expansion. The gauge invariant functional flow equation for arbitrary metrics allows us to extract β-functions for all couplings
Externí odkaz:
https://doaj.org/article/4a223da82d1e4acc94713e9872708fa2
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 5, Pp 1-22 (2020)
Abstract We propose an extension of the standard model with Majorana-type fermionic dark matters based on the flatland scenario where all scalar coupling constants, including scalar mass terms, vanish at the Planck scale, i.e. the scalar potential is
Externí odkaz:
https://doaj.org/article/25ec22f20041406085b748d48daf5d3b
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 8, Pp 1-43 (2019)
Abstract We investigate the Higgs-Yukawa system with Majorana masses of a fermion within asymptotically safe quantum gravity. Using the functional renormalization group method we derive the beta functions of the Majorana masses and the Yukawa couplin
Externí odkaz:
https://doaj.org/article/a08edd7ae7dd427bbee7254252d1ff30
Publikováno v:
Physics Letters B, Vol 813, Iss , Pp 135975- (2021)
Gravity can be regarded as a consequence of local Lorentz (LL) symmetry, which is essential in defining a spinor field in curved spacetime. The gravitational action may admit a zero-field limit of the metric and vierbein at a certain ultraviolet cuto
Externí odkaz:
https://doaj.org/article/42d95af3945f4c5882f32dd5f1f3f6af
Autor:
Jisuke Kubo, Masatoshi Yamada
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 10, Pp 1-28 (2018)
Abstract We consider scalegenesis, spontaneous scale symmetry breaking, by the scalar-bilinear condensation in SU(N) scalar gauge theory. In an effective field theory approach to the scalar-bilinear condensation at finite temperature, we include the
Externí odkaz:
https://doaj.org/article/a62a486b0b65418bb7e8935bf851fa24
Publikováno v:
Nuclear Physics B, Vol 931, Iss C, Pp 105-131 (2018)
We analyze the chiral phase structure of the Nambu–Jona-Lasinio model at finite temperature and density by using the functional renormalization group (FRG). The renormalization group (RG) equation for the fermionic effective potential V(σ;t) is gi
Externí odkaz:
https://doaj.org/article/6cf9db89c6c340f1ad90c5d1bedfa11c