Publications (34)
Neutrino zeromodes on electroweak strings in light of topological insulators
Minoru Eto, Yu Hamada, Ryusuke Jinno +2
We examine neutrino zeromode solutions on the electroweak -string and their effect on the stability of the string in the standard model and its extensions. We propose using topo…
A model of pseudo-Nambu-Goldstone dark matter with two complex scalars
Tomohiro Abe, Yu Hamada, Koji Tsumura
Pseudo-Nambu-Goldstone (pNG) dark matter (DM) is a promising DM candidate and able to explain the measured DM abundance by the thermal freeze-out mechanism evading the stringent bo…
Stable -strings with topological polarization in two Higgs doublet model
Minoru Eto, Yu Hamada, Muneto Nitta
We find that a -string is stable in a wide range of parameter space of the two Higgs doublet model due to a split into a pair of two topological -strings with fractional …
Tying knots in particle physics
Minoru Eto, Yu Hamada, Muneto Nitta
Lord Kelvin's pioneering hypothesis that the identity of atoms is knots of vortices of the aether had a profound impact on the fields of mathematics and physics despite being subse…
Baryons as linked vortices in QCD matter with isospin asymmetry
Yu Hamada, Muneto Nitta, Zebin Qiu
We investigate a baryonic structure in low-energy QCD via a model-independent way using the chiral perturbation theory at the leading order, in the presence of the baryon chemical…
Topological structure of Nambu monopole in Two Higgs doublet models -- Fiber bundle, Dirac's quantization and dyon --
Minoru Eto, Yu Hamada, Muneto Nitta
We find a topologically non-trivial structure of the Nambu monopole in two Higgs doublet model (2HDM), which is a magnetic monopole attached by two topologically stable strings…