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hep-th2026
Hofstadter's Butterfly in AdS Black Holes
Kazuki Ikeda, Yaron Oz
We derive the reduced Dirac Hamiltonian on the non-rotating BTZ background and use its redshift structure to construct a gauge-covariant single-band lattice model on the constant-t…
hep-th2026
Quantum Information Dynamics of QED in Expanding de Sitter Universe
Kazuki Ikeda, Yaron Oz
We study QED in de Sitter space as a minimal interacting gauge theory in which cosmological expansion directly competes with quantum dynamics. In cosmic time, the hopping redsh…
hep-th2025★ 2 cited
Geometry Induced Chiral Transport and Entanglement in Background
Kazuki Ikeda, Yaron Oz
We study the real-time chiral dynamics of Dirac fermions in AdS and AdS black hole backgrounds. The spacetime curvature generates a spin connection term, acting as an effec…