On the creation of the universe via ekpyrotic instantons
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 e...
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| Format: | Article |
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Elsevier
2015-03-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269315000386 |
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doaj-d2384fcb19e846c19dfeb293e7643b102020-11-25T02:33:13ZengElsevierPhysics Letters B0370-26932015-03-01742167171On the creation of the universe via ekpyrotic instantonsLorenzo Battarra0Jean-Luc Lehners1Max-Planck-Institute for Gravitational Physics (Albert-Einstein-Institute), 14476 Potsdam, GermanyCorresponding author.; Max-Planck-Institute for Gravitational Physics (Albert-Einstein-Institute), 14476 Potsdam, GermanyWe 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 successfully incorporated, these new instantons currently describe the most likely origin of the universe.http://www.sciencedirect.com/science/article/pii/S0370269315000386 |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Lorenzo Battarra Jean-Luc Lehners |
| spellingShingle |
Lorenzo Battarra Jean-Luc Lehners On the creation of the universe via ekpyrotic instantons Physics Letters B |
| author_facet |
Lorenzo Battarra Jean-Luc Lehners |
| author_sort |
Lorenzo Battarra |
| title |
On the creation of the universe via ekpyrotic instantons |
| title_short |
On the creation of the universe via ekpyrotic instantons |
| title_full |
On the creation of the universe via ekpyrotic instantons |
| title_fullStr |
On the creation of the universe via ekpyrotic instantons |
| title_full_unstemmed |
On the creation of the universe via ekpyrotic instantons |
| title_sort |
on the creation of the universe via ekpyrotic instantons |
| publisher |
Elsevier |
| series |
Physics Letters B |
| issn |
0370-2693 |
| publishDate |
2015-03-01 |
| description |
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 successfully incorporated, these new instantons currently describe the most likely origin of the universe. |
| url |
http://www.sciencedirect.com/science/article/pii/S0370269315000386 |
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AT lorenzobattarra onthecreationoftheuniverseviaekpyroticinstantons AT jeanluclehners onthecreationoftheuniverseviaekpyroticinstantons |
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