10 papers
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…
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…
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…
Partial bosonisation for the two-dimensional Hubbard model: How well does it work?
Tobias Denz, Mario Mitter, Jan M. Pawlowski +2
Partial bosonisation of the two-dimensional Hubbard model focuses the functional renormalisation flow on channels in which interactions become strong and local order sets in. We co…
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…