4 papers
Halo-Independent Quantum Sensor Probes of Low-Velocity Dark Matter
Muping Chen, Graciela B. Gelmini, Volodymyr Takhistov +1
We present a halo-independent framework for sub-GeV dark matter (DM) direct detection using quantum sensors with sub-eV energy thresholds. Such detectors enable access to low DM ve…
Seeing through the light cone: Visualizing electromagnetic fields in special relativity
Daiju Nakayama, Kin-ya Oda, Koichiro Yasuda
The theoretical framework of electromagnetism played a foundational role in Einstein's development of special relativity. To support conceptual understanding, we present a fully sp…
Covariant Electromagnetism in Past-Light-Cone Formalism
Daiju Nakayama, Kin-ya Oda, Koichiro Yasuda
We present a manifestly covariant formulation of relativistic electromagnetism, focusing on the computation of electromagnetic fields from moving charges in a manifestly Lorentz-co…
Neutrinos and gamma rays from beta decays in an active galactic nucleus NGC 1068 jet
Koichiro Yasuda, Nobuyuki Sakai, Yoshiyuki Inoue +1
We show that TeV neutrinos and high-energy gamma rays detected from the nearby active galaxy NGC 1068 can simultaneously be explained in a model based on the beta decays of neutron…