Geometrodynamics of variable-speed-of-light cosmologies
Geometrodynamics of variable-speed-of-light cosmologies
Variable-speed-of-light (VSL) cosmologies are currently attracting interest as an alternative to inflation. We investigate the fundamental geometrodynamic aspects of VSL cosmologies and provide several implementations which do not explicitly break Lorentz invariance (no ``hard'' breaking). These ``soft'' implementations of Lorentz symmetry breaking provide particularly clean answers to the question ``VSL …