Abstract
The notion of ideal liquid for the number of degrees of freedom less than 2, i.e., γ < 0, is introduced. The values of the pressure P and of the compressibility factor Z on the spinodal in the negative pressure region for the van der Waals equation determine the value of γ, γ(T) < 0, for μ = 0. For \(T \leqslant \frac{{{3^3}}}{{{2^5}}}{T_c}\), a relationship with the van der Waals equation is established.
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Maslov, V.P. Case of less than two degrees of freedom, negative pressure, and the Fermi—Dirac distribution for a hard liquid. Math Notes 98, 138–157 (2015). https://doi.org/10.1134/S0001434615070123
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DOI: https://doi.org/10.1134/S0001434615070123