Expanding and nonexpanding conformal wormholes in scalar-tensor theory

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Atıf İçin Kopyala

ULU DOĞRU M., YILMAZ İ.

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, cilt.24, sa.8, 2015 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 24 Sayı: 8
• Basım Tarihi: 2015
• Doi Numarası: 10.1142/s0218271815500649
• Dergi Adı: INTERNATIONAL JOURNAL OF MODERN PHYSICS D
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet

Özet

We study spherically symmetric spacetime with anisotropic fluid in the scalar-tensor theory of gravity based on Lyra geometry. We suggest two different solutions of field equations for the theory by using Casimir effect. Obtained static and nonstatic solutions are similar to nonexpanding Lorentzian wormhole and expanding FRW-type wormhole, respectively. Furthermore, we study singularities of obtained solutions. We emphasize whether the expanding and nonexpanding wormholes conform with Big Rip or Big Crunch scenarios. Also, physical and geometrical properties of the solutions have been discussed.