115 citations · 1.1k across the 34 of their papers we have counts for
15 papers · 1 filter
phase structure of QCD from functional renormalization group
Yuepeng Guan, Shinya Matsuzaki, Masatoshi Yamada
We study the low-energy properties of QCD-like theories in the presence of a -odd and axial breaking four-fermion operator $\left( \barψ ψ\right) \left( \barψ i γ_5 ψ\rig…
Coleman-Weinberg Abrikosov-Nielsen-Olesen strings
Minoru Eto, Yu Hamada, Ryusuke Jinno +2
We study properties of Abrikosov-Nielsen-Olesen (ANO) strings with the Coleman-Weinberg (CW) potential, which we call CW-ANO strings. While the scale-invariant scalar potential has…
Universal gravitational-wave signatures from heavy new physics in the electroweak sector
Astrid Eichhorn, Johannes Lumma, Jan M. Pawlowski +2
We calculate the gravitational-wave spectra produced by the electroweak phase transition with TeV-scale Beyond-Standard-Model physics in the early universe. Our study captures the…
Gauge hierarchy problem and scalegenesis
Masatoshi Yamada
We review the gauge hierarchy problem in the standard model. We discuss the meaning of the quadratic divergence in terms of the Wilsonian renormalization group. Classical scale sym…
Scalegenesis and fermionic dark matters in the flatland scenario
Yu Hamada, Koji Tsumura, Masatoshi Yamada
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 te…
Planck mass and inflation as consequences of dynamically broken scale invariance
Jisuke Kubo, Manfred Lindner, Kai Schmitz +1
Classical scale invariance represents a promising framework for model building beyond the Standard Model. However, once coupled to gravity, any scale-invariant microscopic model re…
Non-perturbative electroweak-scalegenesis on the test bench of dark matter detection
Jisuke Kubo, Qidir Maulana Binu Soesanto, Masatoshi Yamada
We revisit a recently proposed scale invariant extension of the standard model, in which the scalar bi-linear condensate in a strongly interacting hidden sector dynamically breaks…
Gravitational wave from dark sector with dark pion
Koji Tsumura, Masatoshi Yamada, Yuya Yamaguchi
In this work, we investigate the spectra of gravitational waves produced by chiral symmetry breaking in dark quantum chromodynamics (dQCD) sector. The dark pion () can be a dark…
Scale genesis and gravitational wave in a classically scale invariant extension of the standard model
Jisuke Kubo, Masatoshi Yamada
We assume that the origin of the electroweak (EW) scale is a gauge-invariant scalar-bilinear condensation in a strongly interacting non-abelian gauge sector, which is connected to…
Baryogenesis in false vacuum
Yuta Hamada, Masatoshi Yamada
The null result in the LHC may indicate that the standard model is not drastically modified up to very high scales such as the GUT/string scale. Having this in the mind, we suggest…
Functional renormalization group study of the Nambu--Jona-Lasinio model at finite temperature and density in an external magnetic field
Ken-Ichi Aoki, Hidenari Uoi, Masatoshi Yamada
In this study, we investigate the Nambu--Jona-Lasinio (NJL) model at finite temperature and finite density in an external magnetic field using the functional renormalization group.…
Scale and electroweak first-order phase transitions
Jisuke Kubo, Masatoshi Yamada
We consider phase transitions in the standard model (SM) without the Higgs mass term, which is coupled through a Higgs portal term to an SM singlet, classically scale-invariant gau…
Genesis of electroweak and dark matter scales from a bilinear scalar condensate
Jisuke Kubo, Masatoshi Yamada
The condensation of scalar bilinear in a classically scale invariant strongly interacting hidden sector is used to generate the electroweak scale, where the excitation of the conde…
The RG flow of Nambu--Jona-Lasinio model at finite temperature and density
Ken-Ichi Aoki, Masatoshi Yamada
We study the Nambu--Jona-Lasinio model at finite temperature and finite density by using the functional renormalization group. The RG flows of the four-fermi coupling constant in t…
Analysis of the Dynamical Chiral Symmetry Breaking in QCD at Finite Temperature and Density using the Non-Perturbative Renormalization Group
Ken-Ichi Aoki, Daisuke Sato, Masatoshi Yamada
We analyze the Nambu--Jona-Lasinio model which is a chiral effective model of QCD by using the non-perturbative renormalization group at finite temperature and finite density. We d…