2 papers
hep-th2025
Heat Kernel Methods for Multiloop Calculations in Curved Spacetime: Nonzero Spin
Igor Carneiro, Gero von Gersdorff
In a previous paper we have presented a general formalism for computing Feynman diagrams for scalar fields in curved spacetime at any loop order using heat kernel methods. The main…
hep-th2024
The Heat Kernel in Riemann Normal Coordinates and Multiloop Feynman Graphs in Curved Spacetime
Igor Carneiro, Gero von Gersdorff
We present a formalism for computing arbitrary multi-loop Feynman graphs in curved spacetime using the heat kernel approach. To this end, we compute the off-diagonal components of…