{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,7]],"date-time":"2026-01-07T22:56:59Z","timestamp":1767826619789,"version":"3.49.0"},"reference-count":24,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2017,3,24]],"date-time":"2017-03-24T00:00:00Z","timestamp":1490313600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["PTDC\/FIS\/111725\/2009"],"award-info":[{"award-number":["PTDC\/FIS\/111725\/2009"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["SFRH\/BD\/113746\/2015"],"award-info":[{"award-number":["SFRH\/BD\/113746\/2015"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["IF\/00064\/2012"],"award-info":[{"award-number":["IF\/00064\/2012"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100005635","name":"Funda\u00e7\u00e3o Calouste Gulbenkian","doi-asserted-by":"publisher","award":["2148613525"],"award-info":[{"award-number":["2148613525"]}],"id":[{"id":"10.13039\/501100005635","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Universe"],"abstract":"<jats:p>ESPRESSO is a high-resolution-ultra-stable spectrograph for the Very Large Telescope (VLT), whose commissioning will start in 2017. One of its key science goals is to test the stability of nature\u2019s fundamental couplings with unprecedented accuracy and control of possible systematics. A total of 27 nights of the ESPRESSO Consortium\u2019s guaranteed time observations (GTO) will be spent on testing the stability of the fine-structure constant and other fundamental couplings. A set of 14 priority optimal targets have been selected for the GTO period. In this work, we discuss the criteria underlying this selection, describe the selected targets, and present some forecasts of the impact of these measurements on fundamental physics and cosmology, focusing on dark energy constraints and using future supernova type Ia surveys as a comparison point. This report is a summary of the results reported in Phys. Rev. D 2016, 94, 123512, to which we refer the reader for further details.<\/jats:p>","DOI":"10.3390\/universe3020030","type":"journal-article","created":{"date-parts":[[2017,3,24]],"date-time":"2017-03-24T11:38:27Z","timestamp":1490355507000},"page":"30","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Dark Energy Constraints from Espresso Tests of the Stability of Fundamental Couplings"],"prefix":"10.3390","volume":"3","author":[{"given":"Ana","family":"Leite","sequence":"first","affiliation":[{"name":"Centro de Astrof\u00edsica da Universidade do Porto, Rua das Estrelas, PT4150-762 Porto, Portugal"},{"name":"Instituto de Astrof\u00edsica e Ci\u00eancias do Espa\u00e7o, Universidade do Porto, CAUP, Rua das Estrelas, PT4150-762 Porto, Portugal"},{"name":"Faculdade de Ci\u00eancias, Universidade do Porto, Rua do Campo Alegre, 4150-007 Porto, Portugal"}]},{"given":"Carlos","family":"Martins","sequence":"additional","affiliation":[{"name":"Centro de Astrof\u00edsica da Universidade do Porto, Rua das Estrelas, PT4150-762 Porto, Portugal"},{"name":"Instituto de Astrof\u00edsica e Ci\u00eancias do Espa\u00e7o, Universidade do Porto, CAUP, Rua das Estrelas, PT4150-762 Porto, Portugal"}]},{"given":"Paolo","family":"Molaro","sequence":"additional","affiliation":[{"name":"INAF\u2014Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, I-34143 Trieste, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2017,3,24]]},"reference":[{"key":"ref_1","first-page":"6","article-title":"ESPRESSO\u2014An Echelle SPectrograph for Rocky Exoplanets Search and Stable Spectroscopic Observations","volume":"153","author":"Pepe","year":"2013","journal-title":"Messenger"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"191101","DOI":"10.1103\/PhysRevLett.107.191101","article-title":"Indications of a Spatial Variation of the Fine Structure Constant","volume":"107","author":"Webb","year":"2010","journal-title":"Phys. Rev. Lett."},{"key":"ref_3","unstructured":"King, J.A. (2012). Searching for Variations in the Fine-Structure Constant and the Proton-to-Electron Mass Ratio Using Quasar Absorption Lines. [Ph.D. Thesis, School of Physics, New South Wales U.]."},{"key":"ref_4","unstructured":"Murphy, M.T. (2002). Probing Variations in the Fundamental Constants with Quasar Absorption Lines. 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[Master\u2019s Thesis, University of Porto]."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"083011","DOI":"10.1103\/PhysRevD.89.083011","article-title":"Consistency tests of the stability of fundamental couplings and unification scenarios","volume":"89","author":"Ferreira","year":"2014","journal-title":"Phys. Rev. D"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"124032","DOI":"10.1103\/PhysRevD.91.124032","article-title":"Further consistency tests of the stability of fundamental couplings","volume":"91","author":"Ferreira","year":"2015","journal-title":"Phys. Rev. D"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1843","DOI":"10.1007\/s10714-014-1843-7","article-title":"Fundamental cosmology in the E-ELT era: The status and future role of tests of fundamental coupling stability","volume":"47","author":"Martins","year":"2015","journal-title":"Gen. Relativ. 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