Generalized cosmological constant from gauging Maxwell-conformal algebra

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Kibaroğlu S., Cebecioğlu O.

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, cilt.803, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 803
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1016/j.physletb.2020.135295
  • Dergi Adı: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, INSPEC, zbMATH, Directory of Open Access Journals
  • Anahtar Kelimeler: Lie algebra, Gauge field theory, Modified theory of gravity, Cosmological constant, SPONTANEOUSLY BROKEN, SCALE-INVARIANCE, SPACE-TIME, FIELD, EXTENSION, PARTICLE, RELATIVITY, PRINCIPLE, EQUATIONS, SYMMETRY
  • Kocaeli Üniversitesi Adresli: Evet

Özet

The Maxwell extension of the conformal algebra is presented. With the help of gauging the Maxwell-conformal group, a conformally invariant theory of gravity is constructed. In contrast to the conventional conformally invariant actions, our gravitational action contains the Einstein-Hilbert term without introducing any additional (compensator) scalar field to satisfy the local scale invariance. This is achieved by using the curvatures of the algebra. In a special condition, we show that the resulting action is reduced to the Brans-Dicke like theory of gravity. We subsequently find the generalized Einstein field equation together with a coordinate dependent cosmological term and additional contributions.