View Full Version : can information be transmitted faster than c in inflationary cosmology?
ensabah6
Mar22-09, 01:43 PM
can information be transmitted faster than c in inflationary cosmology where with a large positive cosmological constant, space is itself expanding in an exponential faster than c manner?
George Jones
Mar22-09, 02:07 PM
can information be transmitted faster than c in inflationary cosmology where with a large positive cosmological constant, space is itself expanding in an exponential faster than c manner?
No, because, even in universes that have positive cosmological constants, local speeds are always less than the local speed of light.
DaleSpam
Mar22-09, 04:56 PM
Information cannot be transmitted along a spacelike worldline. But it is possible to have timelike or lightlike worldlines with a "coordinate velocity" greater than c even in special relativity (eg rotating reference frame)
vBulletin® v3.7.6, Copyright ©2000-2009, Jelsoft Enterprises Ltd.