Conjecture on decomposing admissible pair potentials

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Let V(∣x∣)V(|x|) be an admissible pair potential on Rd\mathbb{R}^d. A Ruelle potential is one admitting a decomposition

V(∣x∣)=Φ1(∣x∣)+Φ2(∣x∣),V(|x|)=\Phi_1(|x|)+\Phi_2(|x|),

where Φ1(∣x∣)\Phi_1(|x|) is non-negative and tempered, while Φ2(∣x∣)\Phi_2(|x|) is stable and absolutely integrable.

Ruelle-potential decomposition conjecture. Any stable and tempered pair potential can always be written as a sum of a non-negative potential plus an absolutely summable stable potential.

The paper presents this as a weaker replacement for Ruelle's disproved conjecture: the positive-definiteness requirement on the second summand is removed. The supplied text gives no resolution of this weaker conjecture.

References

Primary source

Thiago Morais, Aldo Procacci and Benedetto Scoppola, “On Lennard-Jones type potentials and hard-core potentials with an attractive tail”, arXiv:1407.0079 (2014).

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