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Exploration of the dynamical phase space at zero temperature includes the well-known soliton propagation as well as double and triple discrete breathers, and dispersion of initially localized states. The uncertainties related to the question of the thermal stability of the Davydov soliton are illustrated. A solution to the seemingly endless problem of the short radiative lifetime of the amide I excitations is proposed.<\/jats:p>","DOI":"10.1063\/10.0015107","type":"journal-article","created":{"date-parts":[[2022,12,7]],"date-time":"2022-12-07T16:20:46Z","timestamp":1670430046000},"page":"973-994","update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":6,"title":["Knowns and unknowns in the Davydov model for energy transfer in proteins"],"prefix":"10.1063","volume":"48","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7958-6435","authenticated-orcid":false,"given":"Leonor","family":"Cruzeiro","sequence":"first","affiliation":[{"name":"Universidade do Algarve, Campus de Gambelas 1 CCMAR\/CIMAR \u2014 Centro de Ci\u00eancias do Mar and Physics, FCT, , 8005-139 Faro, Portugal"}]}],"member":"317","published-online":{"date-parts":[[2022,12,1]]},"reference":[{"key":"2023081008384831400_c1","doi-asserted-by":"publisher","first-page":"559","DOI":"10.1016\/0022-5193(73)90256-7","volume":"38","year":"1973","journal-title":"J. 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