Remarks on "The Modification of Feynman Diagrams in Curved Space-Time"

TL;DR

This paper reviews how weak Schwarzschild spacetime influences Feynman diagram calculations and particle equations, highlighting issues with massless particles and weak-field limitations in a pedagogical context.

Contribution

It provides an extended analysis of modifications to Feynman diagrams in curved spacetime, focusing on massless particles and weak-field approximation constraints.

Findings

Weak Schwarzschild spacetime alters Feynman diagram calculations.

Limitations of weak-field approximation are significant for massless particles.

The review offers insights for astrophysics and quantum field theory in curved spacetime.

Abstract

The arXiv preprint 2411.15164v1 \cite{Li:2024ltx} discusses how a weak Schwarzschild spacetime modifies Feynman diagram calculations and the governing equations of scalar and spinor particles. This short review offers an extended analysis on concerning points involving massless particles and limitations of weak-field approximation. Written for the Universit\"at Potsdam lecture \textit{New Developments in Astrophysics, Winter Semester 2024/25}.