1994/08/29 by K. S. Virbhadra, K S Virbhadra · 5 citations
Physics and Astronomy · #Advanced Differential Geometry Research #Black Holes and Theoretical Physics #Cosmological constant #Cosmology and Gravitation Theories #Curvature #Einstein #Exact solutions in general relativity #Invariant (physics) #Null (SQL) #Scalar field #Singularity #Spacetime #gr-qc #hep-th
paper · pdf · doi:10.1007/bf02847608
published as Pramana 44 (1995) 317-322 · 8 pages, Latex, no number
arxiv created 1994/08/29 · openalex publication_date 1995/04/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
A nonstatic and circularly symmetric exact solution of the Einstein equations (with a cosmological constant Λ and null fluid) in 2+1 dimensions is given. This is a nonstatic generalization of the uncharged spinless BTZ metric. For Λ= 0 , the spacetime is though not flat, the Kretschmann invariant vanishes. The energy, momentum, and power output for this metric are obtained. Further a static and circularly symmetric exact solution of the Einstein-massless scalar equations is given, which has a curvature singularity at r =0 and the scalar field diverges at r=0 as well as at infinity .