منابع مشابه
Plane waves in metric-affine gravity
We describe plane-fronted waves in the Yang-Mills type quadratic metricaffine theory of gravity. The torsion and the nonmetricity are both nontrivial, and they do not belong to the triplet ansatz. PACS: 04.50.+h, 04.30.-w, 04.20.Jb.
متن کاملAn exact plane-fronted wave solution in metric-affine gravity
We study plane–fronted electrovacuum waves in metric–affine gravity (MAG) with cosmological constant in the triplet ansatz sector of the theory. Their field strengths are, on the gravitational side, curvature Rα , nonmetricity Qαβ , torsion T α and, on the matter side, the electromagnetic field strength F . Here we basically present, after a short introduction into MAG and its triplet subcase, ...
متن کاملQuadratic metric-affine gravity
We consider spacetime to be a connected real 4-manifold equipped with a Lorentzian metric and an affine connection. The 10 independent components of the (symmetric) metric tensor and the 64 connection coefficients are the unknowns of our theory. We introduce an action which is quadratic in curvature and study the resulting system of Euler–Lagrange equations. In the first part of the paper we lo...
متن کاملTwo-dimensional metric-affine gravity
There is a number of completely integrable gravity theories in two dimensions. We study the metric-affine approach on a 2-dimensional spacetime and display a new integrable model. Its properties are described and compared with the known results of Poincaré gauge gravity. PACS: 04.50.+h, 04.20.Fy, 04.20.Jb, 04.60.Kz, 02.30.Ik
متن کاملString and Metric–Affine Gravity
We develop the method of anholonomic frames with associated nonlinear connec-tion (in brief, N–connection) structure and show explicitly how geometries with lo-cal anisotropy (various type of Finsler–Lagrange–Cartan–Hamilton geometry) can bemodeled in the metric–affine spaces. There are formulated the criteria when such gen-eralized Finsler metrics are effectively induced in the...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2006
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.73.024025