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- W2023402523 endingPage "1350035" @default.
- W2023402523 startingPage "1350035" @default.
- W2023402523 abstract "We present several theories of four-dimensional gravity in the Plebanski formulation, in which the tetrads and the connections are the independent dynamical variables. We consider the relation between different versions of gravitational theories: Einsteinian, topological, mirror gravities and gravity with torsion. We assume that our world, in which we live, is described by the self-dual left-handed gravity, and propose that if the Mirror World exists in Nature, then the mirror gravity is the right-handed antiself-dual gravity. In this connection, we give a brief review of gravi-weak unification models. In accordance with cosmological measurements, we consider the Universe with broken mirror parity. We also discuss the problems of cosmological constant and communication between visible and mirror worlds. Investigating a special version of the Riemann–Cartan space–time, which has torsion as an additional geometric property, we have shown that in the Plebanski formulation the ordinary and dual topological sectors of gravity, as well as the gravity with torsion, are equivalent. Equations of motion are obtained. In this context, we have also discussed a pure connection gravity — a diffeomorphism-invariant gauge theory of gravity. Loop Quantum Gravity is also briefly reviewed." @default.
- W2023402523 created "2016-06-24" @default.
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- W2023402523 date "2013-05-05" @default.
- W2023402523 modified "2023-09-24" @default.
- W2023402523 title "GRAVITY AND MIRROR GRAVITY IN PLEBANSKI FORMULATION" @default.
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- W2023402523 doi "https://doi.org/10.1142/s0217751x13500358" @default.
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