141 citations · 640 across the 23 of their papers we have counts for
4 papers · 1 filter
How Heavy can Neutralino Dark Matter be?
Hajime Fukuda, Feng Luo, Satoshi Shirai
What is the upper limit of the mass of the neutralino dark matter whose thermal relic is consistent with the observation? If the neutralino dark matter and colored sparticles are e…
Phenomenological Consequences of the Refined Swampland Conjecture
Hajime Fukuda, Ryo Saito, Satoshi Shirai +1
We discuss phenomenological consequences of the recently-introduced refinements of the de Sitter swampland conjecture. The conjecture constraints the first and the second derivativ…
Gauged Peccei-Quinn Symmetry - A Case of Simultaneous Breaking of SUSY and PQ Symmetry
Hajime Fukuda, Masahiro Ibe, Motoo Suzuki +1
Recently, a simple prescription to embed the global Peccei-Quinn (PQ) symmetry into a gauged symmetry has been proposed. There, explicit breaking of the global PQ symmetry e…
Direct Detection of Ultralight Dark Matter via Astronomical Ephemeris
Hajime Fukuda, Shigeki Matsumoto, Tsutomu T. Yanagida
A novel idea of the direct detection to search for a ultralight dark matter based on the interaction between the dark matter and a nucleon is proposed. Solar system bodies feel the…