Fermi-point scenario for emergent gravity

Abstract

Let us assume that gravity is an emergent low-energy phenomenon arising from a topologically stable defect in momentum space -- the Fermi point. What are the consequences? We discuss the natural values of fermion masses and cosmological constant; flatness of the Universe; bounds on Lorentz violation; etc.

Comments: 10 pages, 6 figures, draft for proceedings of conference "From Quantum to Emergent Gravity: Theory and Phenomenology", Trieste June 11-15 (2007), revised after referee report