Bounds on Thermal Relativistic Correlators
We considered relativistic correlation functions at finite temperature in the limit where the momenta of the operators become spacelike and large. Surprisingly, these correlators are bounded by a beautiful geometric quantity: they must die off at least as fast as exp[-R/T] where R is the radius of the smallest sphere that encloses the nonplanar polygon formed by the momenta and T is the temperature. https://arxiv.org/abs/1902.07203