A conjectural formula for $D{R}_g(a,-a){\lambda }_g$

Abstract

We propose a conjectural formula for $D{R}_g(a,-a){\lambda }_g$ and check all its expected properties. Our formula refines the one point case of a similar conjecture made by the first named author in collaboration with Guéré and Rossi, and we prove that the two conjectures are in fact equivalent, though in a quite non-trivial way.

arXiv comment13 pages

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• CMM formula as superintegrability property of unitary model
• Stable tree expressions with Omega-classes and Double Ramification cycles