Geometry of almost-product Lorentzian manifolds and relativistic observer
arXiv:1302.1846
Abstract
The notion of relativistic observer is confronted with Naveira's classification of (pseudo-)Riemannian almost-product structures on space-time manifolds. Some physical properties and their geometrical counterparts are shortly discussed.
13 pages, 2 tables, Talk during the conference Barcelona Postgrad Encounters on Fundamental Physics, October 2012