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  On the Creation of the Universe via Ekpyrotic Instantons

Battarra, L., & Lehners, J.-L. (2015). On the Creation of the Universe via Ekpyrotic Instantons. Physics Letters B, 742, 167-171. doi:10.1016/j.physletb.2015.01.028.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-9895-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-BA5F-7
Genre: Journal Article

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1406.5896.pdf (Preprint), 894KB
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 Creators:
Battarra, Lorenzo, Author
Lehners, Jean-Luc1, Author              
Affiliations:
1String Cosmology, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:1753351              

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Free keywords: High Energy Physics - Theory, hep-th,Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO,General Relativity and Quantum Cosmology, gr-qc
 Abstract: We present a new class of complex instantons in the context of ekpyrotic cosmological theories. These instantons, which satisfy the "no-boundary" boundary conditions, describe the emergence of a classical, contracting universe out of nothing. The ekpyrotic attractor is essential in guaranteeing an evolution towards a real, Lorentzian history of the universe. In the context of the no-boundary proposal, the relative probability for such ekpyrotic histories compared to inflationary ones is very high -- in fact, assuming a bounce can be incorporated, these new instantons currently describe the most likely origin of the universe.

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 Dates: 2014-06-232015
 Publication Status: Published in print
 Pages: 5 pages
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1406.5896
DOI: 10.1016/j.physletb.2015.01.028
 Degree: -

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Title: Physics Letters B
Source Genre: Journal
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Publ. Info: North-Holland
Pages: - Volume / Issue: 742 Sequence Number: - Start / End Page: 167 - 171 Identifier: ISSN: 0370-2693
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/954925524777