Radiation in Yang-Mills formulation of gravity and a generalized pp-wave metric

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Baskal S.

PROGRESS OF THEORETICAL PHYSICS, vol.102, no.4, pp.803-807, 1999 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 102 Issue: 4
  • Publication Date: 1999
  • Doi Number: 10.1143/ptp.102.803
  • Journal Name: PROGRESS OF THEORETICAL PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.803-807
  • Middle East Technical University Affiliated: No

Abstract

Variational methods applied to a quadratic Yang-Mills-type Lagrangian yield two sets of relations interpreted as the field equations and the energy-momentum tensor for the gravitational field. A covariant condition is imposed on the energy-momentum tensor in order for it to represent the radiation field. A generalized pp-wave metric is found to simultaneously satisfy both the field equations and the radiation condition. The result is compared with that of Lichnerowicz.