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Phys."],"published-print":{"date-parts":[[2024,12,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>The latest results on baryon acoustic oscillations from DESI (Dark Energy Spectroscopic Instrument), when combined with cosmic microwave background and supernova data, show indications of a deviation from a cosmological constant in favour of evolving dark energy. Use of a pivot scale for the equation of state <jats:italic>w<\/jats:italic> shows that this evidence is concentrated in the derivative of w rather than its mean offset from -1, indicating a new cosmic coincidence where the mean equation of state matches that of the \u039bCDM model precisely in the region probed by the observations. An equivalent way to express this is to say that the dark energy hits the maximum value that it will ever achieve within the observed window. We argue that conclusions on dark energy evolution are strongly driven by the assumed parameter priors and that this coincidence, which we are naming the PhantomX coincidence (where X stands for crossing),  may be a signature of\u00a0this.<\/jats:p>","DOI":"10.1088\/1475-7516\/2024\/12\/007","type":"journal-article","created":{"date-parts":[[2024,12,5]],"date-time":"2024-12-05T15:35:50Z","timestamp":1733412950000},"page":"007","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":95,"title":["Interpreting DESI's evidence for evolving dark energy"],"prefix":"10.1088","volume":"2024","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0485-3767","authenticated-orcid":false,"given":"Marina","family":"Cort\u00eas","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8164-4830","authenticated-orcid":false,"given":"Andrew R.","family":"Liddle","sequence":"additional","affiliation":[]}],"member":"266","published-online":{"date-parts":[[2024,12,5]]},"reference":[{"key":"bb4a43e631953578432ed26dfe96612a7","article-title":"DESI 2024 III: Baryon Acoustic Oscillations from Galaxies and Quasars","author":"DESI Collaboration","year":"2024"},{"key":"b6b06277dc2926f8de7097320197b1218","article-title":"DESI 2024 IV: Baryon Acoustic Oscillations from the Lyman Alpha Forest","author":"DESI Collaboration","year":"2024"},{"key":"bc04358eb9bcdd33b3e0439125a8d9578","article-title":"DESI 2024 VI: Cosmological Constraints from the Measurements of Baryon Acoustic Oscillations","author":"DESI Collaboration","year":"2024"},{"key":"b2ae5a4386f3953e11696f1b53f5d9e24","doi-asserted-by":"publisher","first-page":"113","DOI":"10.3847\/1538-4357\/ac8b7a","article-title":"The Pantheon+ Analysis: The Full Data Set and Light-curve Release","volume":"938","author":"Scolnic","year":"2022","journal-title":"Astrophys. 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All rights, including for text and data mining, AI training, and similar technologies, are reserved.","name":"copyright_information","label":"Copyright Information"},{"value":"2024-04-30","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-11-10","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-12-05","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}