137 citations · 470 across the 8 of their papers we have counts for
9 papers
Metrology of Band Topology via Resonant Inelastic X-ray Scattering
Sangjin Lee, Kyung-Hwan Jin, Byungmin Kang +2
Topology is a central notion in the classification of band insulators and characterization of entangled many-body quantum states. In some cases, it manifests as quantized observabl…
Probing Grand Unified Theories with Cosmic Ray, Gamma-Ray and Neutrino Astrophysics
Guenter Sigl, Sangjin Lee, Pijushpani Bhattacharjee +1
We explore scenarios where the highest energy cosmic rays are produced by new particle physics near the grand unification scale. Using detailed numerical simulations of extragalact…
Extremely High Energy Neutrinos, Neutrino Hot Dark Matter, and the Highest Energy Cosmic Rays
Shigeru Yoshida, Guenter Sigl, Sangjin Lee
Extremely high energy (up to 10**(22) eV) cosmic neutrino beams initiate high energy particle cascades in the background of relic neutrinos from the Big Bang. We perform numerical…
Cosmological Neutrino Signatures for Grand Unification Scale Physics
Guenter Sigl, Sangjin Lee, David N. Schramm +1
Physics beyond the standard model might imply the cosmological production of particles with grand unification scale energies. Nucleons and gamma-rays from such processes are candid…
Implications of a Possible Clustering of Highest Energy Cosmic Rays
Guenter Sigl, David N. Schramm, Sangjin Lee +2
Very recently, a possible clustering of a subset of observed ultrahigh energy cosmic rays above about 40EeV (4x10^19eV) in pairs near the supergalactic plane was reported. We show…
On the Propagation of Extragalactic High Energy Cosmic and Gamma-Rays
Sangjin Lee
The origin and nature of ultrahigh energy cosmic rays with energies above eV is a puzzle for the physics and astrophysics of cosmic rays which is still unresolved. In th…