On the decoupling theorem for vacuum metastability

Patel, Hiren H. and Radovčić, Branimir (2017) On the decoupling theorem for vacuum metastability. Physics Letters B, 773. pp. 527-533. ISSN 0370-2693

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In this paper, we numerically study the impact heavy field degrees of freedom have on vacuum metastability in a toy model, with the aim of better understanding how the decoupling theorem extends to semiclassical processes. We observe that decoupling applies to partial amplitudes associated with fixed final state field configurations emerging from the tunneling processes, characterized by a scale such as the inverse radius of a spherically symmetric bubble, and not directly on the total lifetime (as determined by the “bounce”). More specifically, tunneling amplitudes for bubbles with inverse radii smaller than the scale of the heavier fields are largely insensitive to their presence, while those for bubbles with inverse radii larger than that scale may be significantly modified.

Item Type: Article
Date: 2017
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. Received 25 April 2017. Received in revised form 4 August 2017. Accepted 31 August 2017. Available online 6 September 2017.
Divisions: Faculty of Science > Department of Physics
Publisher: Elsevier
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 12 Mar 2018 08:53
Last Modified: 12 Mar 2018 08:53
URI: http://digre.pmf.unizg.hr/id/eprint/5785

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