Abstract

We comment on the paper by Haret C. Rosu, Stefan C. Mancas and Chun-Chung Hsieh “Superfluid Rayleigh-Plesset extension of FLRW cosmology” [Annals of Physics 429 (2021) 168490]. Referring to the article by Rousseaux (2020), where some analogy between the expanding Universe and the dynamics of a classical liquid bubble is noted, the authors of commented work transferred these ideas to the superfluid Universe. We consider this move incorrect and present our arguments.

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