Starts 1 Jul 2026 11:00
Ends 1 Jul 2026 12:00
Central European Time
Joint CMSP-HECAP Seminar: Quantum simulations on curved spacetime
Euler Lecture Hall (Leonardo Building, terrace level) and via Zoom
Kazuki Ikeda
(University of Massachusetts at Boston)
Abstract:
We explore how spacetime geometry shapes quantum dynamics by studying fermionic systems in AdS black hole and expanding de Sitter backgrounds. Using lattice realizations of Dirac fermions, we show that curvature, horizons, and cosmological expansion act effectively as gauge fields and chiral potentials, imprinting themselves directly on transport, entanglement, and spectral response. This perspective reveals a unified picture in which geometric and gravitational effects govern phenomena ranging from chiral transport and horizon-driven entanglement dynamics to pseudo-critical spectral flow and emergent irreversibility in time-dependent settings, as well as geometry-controlled fractal spectra in AdS spacetime. The results highlight curved spacetime as a natural framework for organizing quantum many-body dynamics and quantum information diagnostics.
References:
K. Ikeda and Y. Oz. Geometry induced chiral transport and entanglement in AdS2 background. J. High Energ. Phys. 2026, 177 (2026). https://doi.org/ 10.1007/JHEP04(2026)177
K. Ikeda and Y. Oz. Hofstadter’s butterfly in AdS3 black holes. J. High Energ. Phys. 2026, 38 (2026). https://doi.org/10.1007/JHEP06(2026)038
K. Ikeda and Y. Oz. Quantum Information Dynamics of QED2 in Expanding de Sitter Universe. arXiv:2604.02777 (2026). To appear in JHEP
K. Ikeda and Y. Oz. Quantum Simulation of Fermions in AdS2 Black Hole: Chirality, Entanglement, and Spectral Crossovers. arXiv:2509.21410 (2026).