Gravitational interaction for light-like motion in classical and quantum theory

TL;DR

This paper explores gravitational interactions for light-like motion in classical and quantum contexts, demonstrating phenomena like dragging and aligning theoretical predictions with astronomical observations.

Contribution

It provides an exact vacuum solution for light-like motion and investigates quantum interactions of massless particles via virtual gravitons, linking classical and quantum gravity effects.

Findings

Confirmation of dragging phenomenon consistent with observations

Exact vacuum solution for light-like motion in Einstein's equations

Quantum interaction analysis of massless scalar particles via gravitons

Abstract

On the basis of an exact vacuum solution of Einstein's equations, {\it vis}. the pencil-of-light field, we study the light-like motion of test and non-test objects. We also consider the quantum theoretical interaction of massless scalar particles through virtual gravitons. The dragging phenomenon is manifested and its agreement with astronomical observations established. This paper submitted to {\bf arXiv} is a somewhat reedited copy of my article dedicated to Dr. Ivar Piir in a volume published on the occasion of his 60th birthday in 1989 in Tartu by the Estonian Academy of Sciences.