@inproceedings{Espinosa-Portalés:2022us, author = "Espinosa-Portalés, Llorenç", title = "{Entropy in the early universe}", doi = "10.22323/1.398.0123", booktitle = "Proceedings of The European Physical Society Conference on High Energy Physics {\textemdash} PoS(EPS-HEP2021)", year = 2022, volume = "398", pages = "123" }