✦ LIBER ✦
Scalar Matter Coupled to Quantum Gravity in the Causal Approach: One-Loop Calculations and Perturbative Gauge Invariance
✍ Scribed by Nicola Grillo
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 273 KB
- Volume
- 287
- Category
- Article
- ISSN
- 0003-4916
No coin nor oath required. For personal study only.
✦ Synopsis
Quantum gravity coupled to scalar massive matter fields is investigated in the framework of causal perturbation theory using the Epstein Glaser regularizationÂrenormalization scheme. Detailed one-loop calculations include the matter loop graviton self-energy and the matter self-energy. The condition of perturbative operator gauge invariance to second order implies the usual Slavnov Ward identities for the graviton two-point connected Green function in the loop graph sector and generates the correct quartic graviton-matter interaction in the tree graph sector. The mass zero case is also discussed.