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Gravitation and Cosmology in Generalized (1+1)-dimensional dilaton gravity | | J.S.F. Chan
; R.B. Mann
; | | Date: |
25 Aug 1994 | | Journal: | Class.Quant.Grav. 12 (1995) 351-372 | | Subject: | gr-qc | | Abstract: | The actions of the ``$R=T$’’ and string-inspired theories of gravity in (1+1) dimensions are generalized into one single action which is characterized by two functions. We discuss differing interpretations of the matter stress-energy tensor, and show how two such different interpretations can yield two different sets of field equations from this action. The weak-field approximation, post-Newtonian expansion, hydrostatic equilibrium state of star and two-dimensional cosmology are studied separately by using the two sets of field equations. Some properties in the ``$R=T$’’ and string-inspired theories are shown to be generic in the theory induced by the generalized action. | | Source: | arXiv, gr-qc/9408032 | | Services: | Forum | Review | PDF | Favorites | |
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