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Energy momentum tensor on and off the light cone: exposition with scalar Yukawa theory
- Source :
- Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-19 (2024)
- Publication Year :
- 2024
- Publisher :
- SpringerOpen, 2024.
-
Abstract
- Abstract We compute the gravitational form factors A i , D i and c ¯ i $$ {\overline{c}}_i $$ of the scalar Yukawa theory using both the light-cone and covariant perturbation theory at the one-loop level. The light-cone formalism provides a potential approach to access these form factors beyond the perturbative regime. However, unlike the covariant formulation, the Poincaré symmetry on the light cone is not manifest. In this work, we use perturbation theory as a benchmark to extract the gravitational form factors from the light-front energy-momentum tensor. By comparing results on and off the light cone, we identify T ++, T +a , T +− , T 12 as the “good currents” that are properly renormalized and can be used to extract the gravitational form factors.
Details
- Language :
- English
- ISSN :
- 10298479
- Volume :
- 2024
- Issue :
- 7
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of High Energy Physics
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.f2449343ba740c289e827f9902d2901
- Document Type :
- article
- Full Text :
- https://doi.org/10.1007/JHEP07(2024)095