arXiv subjects

Igor Carneiro

Publications and source records attributed to Igor Carneiro.

2 recordsLinked to original sources

arXiv2025

Heat Kernel Methods for Multiloop Calculations in Curved Spacetime: Nonzero Spin

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 technique used is the expansion of the fully off-diagonal heat kernel in Riemann normal coordinates. In this work we extend this to include fields of nonzero spin, in particular spin-$\frac{1}{2}$ fermions.

hep-th↗

arXiv2024

The Heat Kernel in Riemann Normal Coordinates and Multiloop Feynman Graphs in Curved Spacetime

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 the heat kernel in Riemann normal coordinates up to second order in the curvature.

hep-th↗