The P-V phase transition of the FRW universe Shi-Bei Kong, Haximjan Abdusattar, Yihao Yin, Hongsheng Zhang and Ya-Peng Hu Eur. Phys. J. C, 82 11 (2022) 1047 Published online: 18 November 2022 DOI: 10.1140/epjc/s10052-022-10976-9