Non-minimal ln(R) F-2 couplings of electromagnetic fields to gravity: static, spherically symmetric solutions

Dereli T., Sert O.

EUROPEAN PHYSICAL JOURNAL C, cilt.71, sa.3, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 71 Sayı: 3
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1140/epjc/s10052-011-1589-2
  • Dergi Adı: EUROPEAN PHYSICAL JOURNAL C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

We investigate the non-minimal couplings between the electromagnetic fields and gravity through the natural logarithm of the curvature scalar. After we give the Lagrangian formulation of the non-minimally coupled theory, we derive field equations by a first order variational principle using the method of Lagrange multipliers. We look at static, spherically symmetric solutions that are asymptotically flat. We discuss the nature of horizons for some candidate black hole solutions according to various values of the parameters R-0 and a(1).