Work

Witten diagrams in momentum space and one graviton exchange between scalars in Weyl invariant unimodular gravity

Year: 2025

Type: article

Abstract: We tackle head on the computation of the s -channel Witten diagram in momentum space corresponding to the exchange of a graviton between minimally coupled scalars in Weyl invariant unimodular gravity. By means of a lengthy calculation, we show first that the value of the diagram in question is the same as in general relativity and, then, we obtain a compact expression for it in terms of the Mandelstam variables.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.111.066020

Authors: Jesus Anero, Carmelo P. Martin

Institutions: Universidad Autónoma de Madrid, Universidad Complutense de Madrid

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Ministerio de Ciencia, Innovación y Universidades

Award: G1872863806