Scalar-tensor teleparallel gravity with boundary term by Noether symmetries

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Gecim G., KÜÇÜKAKÇA Y.

INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS, cilt.15, sa.9, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Sayı: 9
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1142/s0219887818501517
  • Dergi Adı: INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Teleparallel gravity, Noether symmetry, dark energy, PROBE WMAP OBSERVATIONS, DARK ENERGY, COSMOLOGICAL CONSEQUENCES, F T, UNIVERSE, QUINTESSENCE, INFLATION, MODEL, BREAKING, FIELD
  • Akdeniz Üniversitesi Adresli: Evet

Özet

In the framework of teleparallel avity, the Friedman Robertson Walker (FRW) cosmological model with scalar tensor theory, where scalar field is non-minimally coupled to both the torsion scalar and boundary term, is studied. Utilizing the Noether symmetry approach in such a theory, we obtain the explicit forms of the couplings and potential as a function of the scalar field. We present some important cosmological solutions for the modified field equations using these functions gotten via the Noether symmetry approach. Finally, the interesting cosmological properties of these solutions are discussed in detail, and it is shown that they can describe a universe leading to the late-time accelerating expansion.