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An étude on global vacuum energy sequester

D’Amico, Guido; Kaloper, Nemanja; Padilla, Antonio; Stefanyszyn, David; Westphal, Alexander; Zahariade, George

Authors

Guido D’Amico

Nemanja Kaloper

David Stefanyszyn

Alexander Westphal

George Zahariade



Abstract

Recently two of the authors proposed a mechanism of vacuum energy sequester as a means of protecting the observable cosmological constant from quantum radiative corrections. The original proposal was based on using global Lagrange multipliers, but later a local formulation was provided. Subsequently other interesting claims of a different non-local approach to the cosmological constant problem were made, based again on global Lagrange multipliers. We examine some of these proposals and find their mutual relationship. We explain that the proposals which do not treat the cosmological constant counterterm as a dynamical variable require fine tunings to have acceptable solutions. Furthermore, the counterterm often needs to be retuned at every order in the loop expansion to cancel the radiative corrections to the cosmological constant, just like in standard GR. These observations are an important reminder of just how the proposal of vacuum energy sequester avoids such problems.

Citation

D’Amico, G., Kaloper, N., Padilla, A., Stefanyszyn, D., Westphal, A., & Zahariade, G. (2017). An étude on global vacuum energy sequester. Journal of High Energy Physics, 2017(9), https://doi.org/10.1007/JHEP09%282017%29074

Journal Article Type Article
Acceptance Date Aug 31, 2017
Publication Date Sep 18, 2017
Deposit Date Oct 6, 2017
Publicly Available Date Oct 6, 2017
Journal Journal of High Energy Physics
Electronic ISSN 1029-8479
Publisher Springer Verlag
Peer Reviewed Peer Reviewed
Volume 2017
Issue 9
Article Number 74
DOI https://doi.org/10.1007/JHEP09%282017%29074
Keywords Classical theories of gravity, Effective field theories
Public URL http://eprints.nottingham.ac.uk/id/eprint/47052
Publisher URL https://doi.org/10.1007/JHEP09(2017)074
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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