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  Zoology of instanton solutions in flat potential barriers

Battarra, L., Lavrelashvili, G. V., & Lehners, J.-L. (2013). Zoology of instanton solutions in flat potential barriers. Physical Review D, 88(10): 104012. doi:10.1103/PhysRevD.88.104012.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-3DB1-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-F75C-A
Genre: Journal Article

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 Creators:
Battarra, Lorenzo, Author
Lavrelashvili, George V.1, Author              
Lehners, Jean-Luc2, Author              
Affiliations:
1Quantum Gravity and Unified Theories, AEI Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:24014              
2String Cosmology, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, escidoc:1753351              

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Free keywords: High Energy Physics - Theory, hep-th,General Relativity and Quantum Cosmology, gr-qc
 Abstract: We perform a detailed study of the existence and the properties of O(4)-invariant instanton solutions in Einstein-scalar theory in the presence of flat potential barriers, i.e. barriers where the second derivative of the potential is small at the top of the barrier. We find a whole zoo of solutions: Hawking-Moss, Coleman-De Luccia (CdL), oscillating instantons, asymmetric CdL as well as other non-standard CdL-like solutions with additional negative modes in their spectrum of fluctuations. Our work shows how these different branches of solutions are connected to each other via "critical" instantons possessing an extra zero mode fluctuation. Overall, the space of finite action euclidean solutions to these theories with flat barriers is surprisingly rich and intricate.

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 Dates: 2013-07-302013
 Publication Status: Published in print
 Pages: 22 pages, 11 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1307.7954
DOI: 10.1103/PhysRevD.88.104012
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Title: Physical Review D
  Other : Phys. Rev. D.
Source Genre: Journal
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Publ. Info: Lancaster, Pa. : American Physical Society
Pages: - Volume / Issue: 88 (10) Sequence Number: 104012 Start / End Page: - Identifier: ISSN: 0556-2821
CoNE: http://pubman.mpdl.mpg.de/cone/journals/resource/111088197762258