An étude on global vacuum energy sequester
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...
| Main Authors: | , , , , , |
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| Format: | Article |
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Springer
2017
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| Online Access: | https://eprints.nottingham.ac.uk/47052/ |
| _version_ | 1848797456770269184 |
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| author | D’Amico, Guido Kaloper, Nemanja Padilla, Antonio Stefanyszyn, David Westphal, Alexander Zahariade, George |
| author_facet | D’Amico, Guido Kaloper, Nemanja Padilla, Antonio Stefanyszyn, David Westphal, Alexander Zahariade, George |
| author_sort | D’Amico, Guido |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T20:04:10Z |
| format | Article |
| id | nottingham-47052 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:04:10Z |
| publishDate | 2017 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-470522020-05-04T19:07:30Z https://eprints.nottingham.ac.uk/47052/ An étude on global vacuum energy sequester D’Amico, Guido Kaloper, Nemanja Padilla, Antonio Stefanyszyn, David Westphal, Alexander Zahariade, George 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. Springer 2017-09-18 Article PeerReviewed D’Amico, Guido, Kaloper, Nemanja, Padilla, Antonio, Stefanyszyn, David, Westphal, Alexander and Zahariade, George (2017) An étude on global vacuum energy sequester. Journal of High Energy Physics, 2017 (9). 74/1-74/18. ISSN 1029-8479 Classical theories of gravity Effective field theories https://doi.org/10.1007/JHEP09(2017)074 doi:10.1007/JHEP09(2017)074 doi:10.1007/JHEP09(2017)074 |
| spellingShingle | Classical theories of gravity Effective field theories D’Amico, Guido Kaloper, Nemanja Padilla, Antonio Stefanyszyn, David Westphal, Alexander Zahariade, George An étude on global vacuum energy sequester |
| title | An étude on global vacuum energy sequester |
| title_full | An étude on global vacuum energy sequester |
| title_fullStr | An étude on global vacuum energy sequester |
| title_full_unstemmed | An étude on global vacuum energy sequester |
| title_short | An étude on global vacuum energy sequester |
| title_sort | étude on global vacuum energy sequester |
| topic | Classical theories of gravity Effective field theories |
| url | https://eprints.nottingham.ac.uk/47052/ https://eprints.nottingham.ac.uk/47052/ https://eprints.nottingham.ac.uk/47052/ |