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hep-th2026
On-Shell Amplitudes and Black-Hole Perturbations: Exact Reissner-Nordström Mixing
Kento Takahara, Teppei Kitahara
Can flat-space on-shell amplitudes determine the channel basis of a coupled black-hole perturbation problem? We address this question for electromagnetic and gravitational perturba…
hep-th2022★ 16 cited
Monopole-fermion scattering and varying Fock space
Yuta Hamada, Teppei Kitahara, Yoshiki Sato
We propose a four-dimensional interpretation of the outgoing state of the scattering of a massless fermion off a Dirac monopole. It has been known that such a state has fractional…