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- The 4D Einstein–Gauss–Bonnet theory of gravity: a review
We review the topic of 4D Einstein–Gauss–Bonnet (4DEGB) gravity, which has been the subject of considerable interest over the past two years Our review begins with a general introduction to Lovelock's theorem, and the subject of Gauss–Bonnet terms in the action for gravity
- Topological four-dimensional Einstein gravity - ScienceDirect
A theory of topological gravity is presented on a euclidean four-manifold The gauge conditions for topological symmetries are singled out in such a way that not only the curvature 2-form is self-dual but also the torsion 2-form is vanishing
- A note onthe novel 4DEinstein-Gauss-Bonnet gravity - arXiv. org
It is well known that the Gauss-Bonnet term is topo-logical in four-dimensional spacetime while it becomes lo-cal in higher-dimensional spacetime The integral of the Gauss-Bonnet invariant over a four-dimensional space-time M 4 (properly compactified) gives the Euler charac-teristic χ(M 4) via χ(M 4) = 1 32π2 Z M4 d4x √ −gG, (1) where
- A rudimentary theory of topological 4D gravity
A theory of topological gravity is a homotopy-theoretic represen- tation of the Segal-Tillmann topologification of a two-category with cobordisms as morphisms
- The 4D Einstein-Gauss-Bonnet theory of gravity: A review
We review the topic of 4D Einstein-Gauss-Bonnet gravity, which has been the subject of considerable interest over the past two years Our review begins with a general introduction to Lovelock’s
- Topological Four-Dimensional Gravity - Oxford Academic
We construct a model of topological gravity in four space-time dimensions Topological symmetries are gauge-fixed in three kinds of conditions, which are (i) self-duality on curvature and vanishing torsion, (ii) self-duality on both curvature and torsion, and (iii) Einstein space
- Topological four-dimensional self-dual gravity
A theory of topological gravity with an independent vierbein and spin connection is formulated in four space-time dimensions Topological symmetries, as well as local Lorentz transformations and diffeomorphisms, are fixed, following the formalism of Batalin and Vilkovisky
- Topological four-dimensional Einstein gravity - inspirehep. net
A theory of topological gravity is presented on a euclidean four-manifold The gauge conditions for topological symmetries are singled out in such a way that not only the curvature 2-form is self-dual but also the torsion 2-form is vanishing
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