Wick squares of the Gaussian Free Field and Riemannian rigidity

Abstract

In the present paper, we show that on a compact Riemannian manifold $(M,g)$ of dimension $d⩽4$ whose metric has negative curvature, the renormalized partition function $Z_g(\lambda )$ of a massive Gaussian Free Field determines the length spectrum of $(M,g)$ and imposes some strong geometric constraints on the Riemannian structure of $(M,g)$. In any finite dimensional family of Riemannian metrics of negative sectional curvature bounded from below and above and whose isometry group is trivial, there is only a \textbf{finite number of isometry classes} of metrics with given partition function $Z_g(\lambda )$. When $d<4$, the same result holds true if the random variable ${\int }_M:{\varphi }^2:dv$ has given probability distribution and without the lower bound on the sectional curvatures.

Major revision and totally rewritten, corrected several mistakes, expanded the main result to dimension $4$

References in corpus (6)

• Quantum Gravity in 2+1 Dimensions
• Fried conjecture in small dimensions
• The algebra of Wick polynomials of a scalar field on a Riemannian manifold
• Invariant distributions, Beurling transforms and tensor tomography in higher dimensions
• Calculus of conformal fields on a compact Riemann surface
• Ricci Flow from the Renormalization of Nonlinear Sigma Models in the Framework of Euclidean Algebraic Quantum Field Theory