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    Energy momentum of marder universe in teleparallel gravity
    (Springer/Plenum Publishers, 2007) Ayguen, Sezgin; Baysal, Huesnue; Tarhan, Ismail
    In order to evaluate the energy distribution (due to matter and fields including gravitation) associated with a space-time model of cylindrically-symmetric Marder universe, we consider the Moller, Einstein, Bergmann-Thomson and Landau-Lifshitz energy and momentum definitions in the teleparallel gravity (TG). The energy-momentum distributions are found to be zero. These results are the same as a previous works of Aygun et al., they investigated the same problem in general relativity (GR) by using the Einstein, Moller, Bergmann-Thomson, Landau-Lifshitz (LL), Papapetrou, Qadir-Sharif and Weinberg's definitions. These results support the viewpoints of Banerjee-Sen, Xulu, Radinschi and Aydogdu-Salt1. Another point is that our study agree with previous works of Cooperstock-Israelit, Rosen, Johri et al. This paper indicates an important point that these energy-momentum definitions agree with each other not only in general relativity but also in teleparallel gravity. It is also independent of the teleparallel dimensionless coupling constants, which means that it is valid not only in the teleparallel equivalent of general relativity, but also in any teleparallel model.
  • [ X ]
    Öğe
    Energy of rigidly rotating wormhole space-time
    (Amer Inst Physics, 2007) Ayguen, Melis; Yilmaz, Ihsan; Ayguen, Sezgin
    This study is purposed to elaborate the problem of energy distribution of the Rigidly Rotating Wormhole space-time in general theory of relativity. In this connection, we use the energy-momentum definitions of Einstein, Bergmann-Thomson and Tolman. We obtained that the energy distributions of Einstein, Bergmann-Thomson and Tolman definitions give the same results in Rigidly Rotating Wormhole space-time.