3 papers
physics.chem-ph2020
A method to approximate cluster integrals and reproduce subcritical isotherms for model and real gases
M. V. Ushcats, L. A. Bulavin
A method is proposed to approximate the unlimited subcritical set of Mayer`s reducible cluster integrals (i.e., the power coefficients of the known virial expansions for pressure a…
cond-mat.stat-mech2018
Evidence for the first-order phase transition at the divergence region of activity expansions
Michael V. Ushcats, Leonid A. Bulavin
On the example of a lattice-gas model, a convincing confirmation is obtained for the direct relationship between the condensation phenomenon and divergent behavior of the virial ex…
cond-mat.stat-mech2018
Equation of state for all regimes of a fluid: from gas to liquid
M. V. Ushcats, S. Yu. Ushcats, L. A. Bulavin +1
The study of Mayer's cluster expansion (CE) for the partition function demonstrates a possible way to resolve the problem of the CE non-physical behavior at condensed states of flu…