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EnglishWe consider the quantum description of a toy model universe in which the Schwarzschild-de Sitter geometry emerges from the coherent state of a massless scalar field. Although highly idealised, this simple model allows us to find clear hints supporting the conclusion that the reaction of the de Sitter background to the presence of matter sources induces i) a modified Newtonian dynamics at galactic scales and ii) different values measured for the present Hubble parameter. Both effects stem from the conditions required to have a normalisable quantum state.
| Titolo: | A quantum state for the late Universe | |
| Autore/i: | Giusti, Andrea; Buffa, Silvia; Heisenberg, Lavinia; Casadio, Roberto | |
| Autore/i Unibo: | ||
| Anno: | 2022 | |
| Rivista: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.physletb.2022.136900 | |
| Abstract: | We consider the quantum description of a toy model universe in which the Schwarzschild-de Sitter geometry emerges from the coherent state of a massless scalar field. Although highly idealised, this simple model allows us to find clear hints supporting the conclusion that the reaction of the de Sitter background to the presence of matter sources induces i) a modified Newtonian dynamics at galactic scales and ii) different values measured for the present Hubble parameter. Both effects stem from the conditions required to have a normalisable quantum state. | |
| Data stato definitivo: | 2022-01-18T14:07:32Z | |
| Appare nelle tipologie: | 1.01 Articolo in rivista |
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| File | Descrizione | Tipo | Licenza | |
|---|---|---|---|---|
| 1-s2.0-S037026932200034X-main.pdf | Versione (PDF) editoriale | Licenza per Accesso Aperto. Creative Commons Attribuzione (CCBY) | Open Access Visualizza/Apri |
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