Timelike and spacelike Ricci colloneation vectors in string cosmology

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Yilmaz I.

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, vol.10, no.5, pp.681-690, 2001 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 10 Issue: 5
• Publication Date: 2001
• Doi Number: 10.1142/s0218271801001074
• Journal Name: INTERNATIONAL JOURNAL OF MODERN PHYSICS D
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Page Numbers: pp.681-690
• Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

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.