3 papers
math.DG2025
Einstein Structure of Four-Manifolds
Jeongwon Ho, Kyung Kiu Kim, Hyun Seok Yang
It is known that the moduli space of Einstein structures in four dimensions is generally considered to be rigid so that Einstein metrics tend to be isolated modulo diffeomorphisms…
gr-qc2024
Exact Results On the Number of Gravitons Radiated During Binary Inspiral
Youngjoo Chung, Hyun Seok Yang
We derive an exact formula which provides a concrete estimate for the total number and angular momentum of gravitons emitted during the nonrelativistic inspiral of two black…
hep-th2024
Explicit Construction of Hermitian Yang-Mills Instantons on Coset Manifolds
Jongmin Park, Hyun Seok Yang
In four dimensions, 't Hooft symbols offer a compact and powerful framework for describing the self-dual structures fundamental to instanton physics. Extending this to six dimensio…