115 citations · 1.1k across the 34 of their papers we have counts for
18 papers · 1 filter
On the phase structure of extra-dimensional gauge theories with fermions
Álvaro Pastor-Gutiérrez, Masatoshi Yamada
We study the phase structure of five-dimensional Yang-Mills theories coupled to Dirac fermions. In order to tackle their non-perturbative character, we derive the flow equations fo…
Scaling solutions for asymptotically free quantum gravity
Saswato Sen, Christof Wetterich, Masatoshi Yamada
We compute scaling solutions of functional flow equations for quantum gravity in a general truncation with up to four derivatives of the metric. They connect the asymptotically fre…
UV completion of extradimensional Yang-Mills theory for Gauge-Higgs unification
Álvaro Pastor-Gutiérrez, Masatoshi Yamada
The Yang-Mills theory in spacetime is studied as a simple toy model of Gauge-Higgs unification. The theory is perturbatively nonrenormalizable but c…
Determining wave equations in holographic QCD from Wilsonian renormalization group
Fei Gao, Masatoshi Yamada
We show a possible way to build the AdS/CFT correspondence starting from the quantum field theory side based on renormalization group approach. An extra dimension is naturally intr…
Asymptotic freedom and safety in quantum gravity
Saswato Sen, Christof Wetterich, Masatoshi Yamada
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 arbitrar…
Higgs scalar potential coupled to gravity in the exponential parametrization in arbitrary gauge
Nobuyoshi Ohta, Masatoshi Yamada
We study the parametrization and gauge dependences in the Higgs field coupled to gravity in the context of asymptotic safety. We use the exponential parametrization to derive the f…
Gravitational instantons and anomalous chiral symmetry breaking
Yu Hamada, Jan M. Pawlowski, Masatoshi Yamada
We study anomalous chiral symmetry breaking in two-flavour QCD induced by gravitational and QCD-instantons within asymptotically safe gravity within the functional renormalisation…
Dynamically emergent gravity from hidden local Lorentz symmetry
Shinya Matsuzaki, Shota Miyawaki, Kin-ya Oda +1
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 zer…
Variable Planck mass from the gauge invariant flow equation
Christof Wetterich, Masatoshi Yamada
Using the gauge invariant flow equation for quantum gravity we compute how the strength of gravity depends on the length or energy scale. The fixed point value of the scale-depende…
On the impact of Majorana masses in gravity-matter systems
Gustavo P. de Brito, Yuta Hamada, Antonio D. Pereira +1
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…
Higgs scalar potential in asymptotically safe quantum gravity
Jan M. Pawlowski, Manuel Reichert, Christof Wetterich +1
The effect of gravitational fluctuations on the quantum effective potential for scalar fields is a key ingredient for predictions of the mass of the Higgs boson, understanding the…
Scale and confinement phase transitions in scale invariant scalar gauge theory
Jisuke Kubo, Masatoshi Yamada
We consider scalegenesis, spontaneous scale symmetry breaking, by the scalar-bilinear condensation in scalar gauge theory. In an effective field theory approach to the scal…
Asymptotic safety and field parametrization dependence in the f(R) truncation
Gustavo P. de Brito, Nobuyoshi Ohta, Antonio D. Pereira +2
We study the dependence on field parametrization of the functional renormalization group equation in the truncation for the effective average action. We perform a systematic…
Quantum gravity fluctuations flatten the Planck-scale Higgs potential
Astrid Eichhorn, Yuta Hamada, Johannes Lumma +1
We investigate asymptotic safety of a toy model of a singlet-scalar extension of the Higgs sector including two real scalar fields under the impact of quantum-gravity fluctuations.…
Phase structure of NJL model with weak renormalization group
Ken-Ichi Aoki, Shin-Ichiro Kumamoto, Masatoshi Yamada
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 gr…
Asymptotic safety of higher derivative quantum gravity non-minimally coupled with a matter system
Yuta Hamada, Masatoshi Yamada
We study asymptotic safety of models of the higher derivative quantum gravity with and without matter. The beta functions are derived by utilizing the functional renormalization gr…
Gauge hierarchy problem in asymptotically safe gravity--the resurgence mechanism
Christof Wetterich, Masatoshi Yamada
The gauge hierarchy problem could find a solution within the scenario of asymptotic safety for quantum gravity. We discuss a "resurgence mechanism" where the running dimensionless…
Non-minimal coupling in Higgs-Yukawa model with asymptotically safe gravity
Kin-ya Oda, Masatoshi Yamada
We study the fixed point structure of the Higgs-Yukawa model, with its scalar being non-minimally coupled to the asymptotically safe gravity, using the functional renormalization g…