𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The graviton propagator with a non-conserved external generating source

✍ Scribed by E.B. Manoukian; S. Sukkhasena

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
181 KB
Volume
55
Category
Article
ISSN
0015-8208

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A novel general expression is obtained for the graviton propagator from Lagrangian field theory by taking into account the necessary fact that in the functional differential approach of quantum field theory, in order to generate non‐linearities in gravitation and interactions with matter, the external source T~μν~, coupled to the gravitational field, should a priori not be conserved ∂^μ^ T~μν~≠ 0, so variations with respect to its ten components may be varied independently. The resulting propagator is the one which arises in the functional approach and does not coincide with the corresponding time‐ordered product of two fields and it includes so‐called Schwinger terms. The quantization is carried out in a gauge corresponding to physical states with two polarization states to ensure positivity in quantum applications.

📜 SIMILAR VOLUMES

Global existence and asymptotic behavior
Global existence and asymptotic behavior for the compressible Navier–Stokes equations with a non-autonomous external force and a heat source
✍ Yuming Qin; Xiaona Yu 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 209 KB

## Abstract In this paper, we prove the global existence and asymptotic behavior, as time tends to infinity, of solutions in __H__^__i__^ (__i__=1, 2) to the initial boundary value problem of the compressible Navier–Stokes equations of one‐dimensional motion of a viscous heat‐conducting gas in a bo