Timelike and spacelike Ricci colloneation vectors in string cosmology

Yilmaz I.

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, cilt.10, sa.5, ss.681-690, 2001 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 10 Sayı: 5
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1142/s0218271801001074
  • Dergi Adı: INTERNATIONAL JOURNAL OF MODERN PHYSICS D
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.681-690
  • Çanakkale Onsekiz Mart Üniversitesi Adresli: Evet

Özet

In this paper, we study the consequences of the existence of timelike and spacelike Ricci collineation vectors (RCVs) for string cloud in the context of general relativity. Necessary and sufficient conditions are derived for a space-time with string cloud to admit a timelike RCV parallel to u(a) and a spacelike RCV parallel to x(a). Also, some results are obtained.