researchers with a paper here
collaborating institutions

6 papers

hep-lat2026

Lattice fermion formulation via Physics-Informed Neural Networks: Ginsparg-Wilson relation and Overlap fermions

Tatsuhiro Misumi

We propose a novel, machine-learning-based framework for constructing lattice fermions using Physics-Informed Neural Networks (PINNs). Our approach treats the formulation of the Di…

cond-mat.quant-gas2026

Stability of current-carrying states in hard-core bosons with long-range hopping on a square lattice

Yoshihiro Yabuuchi, Ippei Danshita

We investigate the stability of current-carrying states with quasi-momentum in the Bose-condensed phase of the hard-core Bose-Hubbard model on a square lattice, where particles…

gr-qc2026

Spectral instability of parametrized black hole quasinormal modes in the high-overtone limit via the exact WKB analysis

Taiga Miyachi, Ryo Namba, Hidetoshi Omiya +1

We study the asymptotic behavior of parametrized black hole quasinormal modes (QNMs) in the high-overtone limit. To gain insights into their analytical structure, we apply the exac…

cond-mat.quant-gas2026

Entanglement-enhanced correlation propagation in the one-dimensional SU() Fermi-Hubbard model

Mathias Mikkelsen, Ippei Danshita

We investigate the dynamics of correlation propagation in the one-dimensional Fermi-Hubbard model with SU() symmetry when the repulsive-interaction strength is quenched from a l…

gr-qc2026

Exceptional Lines and Excitation of (Nearly) Double-Pole Quasinormal Modes: A Semi-Analytic Study in the Nariai Black Hole

Nao Nakamoto, Naritaka Oshita

We show that quasinormal modes (QNMs) of a massive scalar field in Kerr-de Sitter and Myers-Perry black holes exhibit an exceptional line (EL), which is a continuous set of excepti…

cond-mat.quant-gas2026

Higgs and Nambu-Goldstone modes in a spin-1 model with long-range interactions

Daiki Kawasaki, Ippei Danshita

We theoretically study the collective excitations in a spin-1 model with a quadratic Zeeman term and a long-range interaction that decays algebraically with the distance. Usin…