Feynman's \(i\epsilon\) prescription, almost real spacetimes, and acceptable complex spacetimes

DOI10.1007/JHEP08(2022)129MaRDI QIDQ2678064

Matt Visser

Publication date: 9 January 2023

Published in: Journal of High Energy Physics (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2111.14016

zbMATH Keywords

spacetime singularitiesclassical theories of gravitymodels of quantum gravityeffective field theories

Mathematics Subject Classification ID

Quantum theory (81-XX)

Related Items (7)

Complex actions and causality violations: applications to Lorentzian quantum cosmology ⋮ Physically motivated ansatz for the Kerr spacetime ⋮ Higher derivative gravity’s anti-Newtonian limit and the Caldirola–Kanai oscillator ⋮ Uses of complex metrics in cosmology ⋮ A note on the admissibility of complex BTZ metrics ⋮ Canonical quantization of the electromagnetic field in arbitrary \(\xi \)-gauge ⋮ Convergence of the Fefferman-Graham expansion and complex black hole anatomy

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