199 citations · 4.2k across the 135 of their papers we have counts for
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Gravitational Waves and Nambu-Goldstone Bosons from Infrared-Finite Cosmic Strings
Hajime Fukuda, Shuailiang Ge, Keisuke Harigaya
Skyrmion lines and semi-local strings are examples of infrared-finite cosmic strings that arise in theories with spontaneously broken global symmetries. Unlike global string…
TeV-scale leptogenesis in a parity symmetric neutrino mass model
Keisuke Harigaya, Gio Leone
We study leptogenesis via out-of-equilibrium decays of right-handed neutrinos in a parity symmetric extension of the Standard Model with gauge group $SU(3)_c \times SU(2)_L \times…
Accidentally Stable Dark Matter in a Parity Solution to the Strong CP Problem
Matthew J. Baldwin, Keisuke Harigaya, Isaac R. Wang
Parity symmetry, with an extended gauge group , can solve the strong CP problem. In particular, the model where $SU(2)_R\times…
Accidental Peccei-Quinn Symmetry from Chiral Gauge Symmetry and Mirror QCD
Hajime Fukuda, Keisuke Harigaya
We present a solution to the strong CP problem in which a simple chiral U(1) gauge symmetry gives rise to an accidental Peccei-Quinn symmetry that is both explicitly and spontaneou…