from The American Heritage® Dictionary of the English Language, 5th Edition.
- adjective Of or relating to a cosmological theory proposing that the known universe originated in the collision of two other three-dimensional universes traveling in a hidden fourth dimension. This scenario does not require a singularity at the moment of the Big Bang.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective Used in the names "ekpyrotic universe" or "ekpyrotic scenario", coined specifically to name this theory.
- adjective Relating to the ekpyrotic scenario, e.g. ekpyrotic cosmology.
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
Steinhardt is the author of the quintessence theory and a cosmological idea called ekpyrotic (if I remember the spelling).
String theory offers mechanisms to get around the singularity problem of the big bang: Physicists Paul Steinhardt and Neil Turok have proposed an " ekpyrotic " model, where two universes floating in multidimensional space collide to produce a new beginning for the universe.
Both take advantage of branes and extra dimensions to try to follow cosmological evolution right through the purported Big Bang singularity; in the ekpyrotic case, there is a unique turnaround point, whereas in the cyclic case there are an infinite number of bounces stretching endlessly into the past and the future.
Any bounce or ekpyrotic model will not give us an answer to creation?
A related set of ideas have been advanced by Steinhardt, Turok, and collaborators, first as the ekpyrotic scenario and later as the cyclic universe scenario.
One might also count more specific cosmic scenarios like DBI inflation, pre-Big-Bang cosmology, the ekpyrotic universe, and brane gas cosmologies.
There remains room for alternatives like the ekpyrotic cyclic universe model of Steinhart and Turock (see _Analog_, April 2002 and January 2003), in which two extra-dimensional "branes" clap together to produce a later-stage Big Bang with no inflation or initial singularity.
The real target for this assertion is the ekpyrotic universe theory, something with which Hawking disagrees.
The ekpyrotic universe model, suggested by Paul Steinhardt and Neil Turok, tells a similar story.
In ekpyrotic cosmology our Universe was formed by similar collision of many branes, but in substantially larger scope, then the LHC could provide.