We propose a new axiom system for unitary quantum field theories on curved space-time backgrounds, by postulating that the partition function and the correlators extend analytically to a certain domain of complex-valued metrics. Ordinary Riemannian metrics are contained in the allowable domain, while Lorentzian metrics lie on its boundary.
CITATION STYLE
Kontsevich, M., & Segal, G. (2021). Wick Rotation and the Positivity of Energy in Quantum Field Theory. Quarterly Journal of Mathematics, 72(1–2), 673–699. https://doi.org/10.1093/qmath/haab027
Mendeley helps you to discover research relevant for your work.