Is it possible to know cosmological fine-tuning?

Autor:	Díaz-Pachón, Daniel Andrés, Hössjer, Ola, Mathew, Calvin
Rok vydání:	2024
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics Computer Science - Information Theory Statistics - Methodology 85A40 85A40 (Primary) 68T30 94A15 (Secondary)
Druh dokumentu:	Working Paper
Popis:	Fine-tuning studies whether some physical parameters, or relevant ratios between them, are located within so-called life-permitting intervals of small probability outside of which carbon-based life would not be possible. Recent developments have found estimates of these probabilities that circumvent previous concerns of measurability and selection bias. However, the question remains if fine-tuning can indeed be known. Using a mathematization of the epistemological concepts of learning and knowledge acquisition, we argue that most examples that have been touted as fine-tuned cannot be formally assessed as such. Nevertheless, fine-tuning can be known when the physical parameter is seen as a random variable and it is supported in the nonnegative real line, provided the size of the life-permitting interval is small in relation to the observed value of the parameter. Comment: Accepted version. Minor changes: a sentence removed at the end of Section 5.2, and more comprehensive keywords
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2401.04190 Zobrazit plný text záznamu View this record from Arxiv