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ekpyrotic

Definitions

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.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Greek ekpurōsis, conflagration, cyclically recurring conflagration in which the universe is destroyed and reborn according to Stoic philosophy (from ex, ek, out of; see eghs in Indo-European roots + pūr, pur-, fire; see paəwr̥ in Indo-European roots + -ōsis, n. suff.) + –otic.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Coined in 2001 by Paul Steinhardt, from Ancient Greek εκπυρωσι&ς (ekpurōsis) "conflagration, ekpyrosis", referring in Stoic philosophy to the destruction and recreation of the world in fire.

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Examples

  • Steinhardt is the author of the quintessence theory and a cosmological idea called ekpyrotic (if I remember the spelling).

    A Dark, Misleading Force Sean 2007

  • 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.

    How It Brian Clegg 2010

  • 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.

    How Did the Universe Start? Sean 2007

  • Any bounce or ekpyrotic model will not give us an answer to creation?

    Against Bounces Sean 2007

  • 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.

    How Did the Universe Start? Sean 2007

  • One might also count more specific cosmic scenarios like DBI inflation, pre-Big-Bang cosmology, the ekpyrotic universe, and brane gas cosmologies.

    Guest Blogger: Joe Polchinski on the String Debates Sean 2006

  • 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.

    Analog Science Fiction and Fact 2003

  • The real target for this assertion is the ekpyrotic universe theory, something with which Hawking disagrees.

    The Full Feed from HuffingtonPost.com Clay Farris Naff 2012

  • The ekpyrotic universe model, suggested by Paul Steinhardt and Neil Turok, tells a similar story.

    New Scientist - Online News 2010

  • In ekpyrotic cosmology our Universe was formed by similar collision of many branes, but in substantially larger scope, then the LHC could provide.

    PhysOrg.com - latest science and technology news stories PhysOrg Team 2010

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  1. ekpyrosis

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