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The Mayer series of the Lennard-Jones gas: improved bounds for the convergence radius
We provide a lower bound for the convergence radius of the Mayer series of
the Lennard-Jones gas which strongly improves on the classical bound obtained
by Penrose and Ruelle 1963. To obtain this result we use an alternative
estimate recently proposed by Morais et al. (J. Stat. Phys. 2014) for a
restricted class of stable and tempered pair potentials (namely those which can
be written as the sum of a non-negative potential plus an absolutely integrable
and stable potential) combined with a method developed by Locatelli and Schoen
(J. Glob. Optim. 2002) for establishing a lower bound for the minimal
interatomic distance between particles interacting via a Morse potential in a
cluster of minimum-energy configurations
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