Turkish Journal of Physics
A nonminimal coupling of Weyl curvatures to electromagnetic fields is considered in Brans-Dicke-Maxwell theory. The gravitational field equations are formulated in a Riemannian spacetime where the spacetime torsion is constrained to zero by the method of Lagrange multipliers in the language of exterior differential forms. The significance and ramifications of nonminimal couplings to gravity are examined in a pp-wave spacetime.
Classical general relativity, gravitational waves, modified theories of gravity
DERELİ, DÜNDAR TEKİN and ŞENİKOĞLU, YORGO
"A nonminimally coupled, conformally extended Einstein-Maxwell theory of pp-waves,"
Turkish Journal of Physics: Vol. 44:
3, Article 4.
Available at: https://journals.tubitak.gov.tr/physics/vol44/iss3/4