In the large-N limit of the 2D O(N) scalar theory, the IR renormalon in the ground state energy is the correct asymptotic expansion of the exact solution, with the complete trans-series determined at NLO in 1/N; the two-point function has a similar non-Borel-summable renormalon.
The complete trans-series for conserved charges in the Lieb-Liniger model
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abstract
We determine the complete trans-series solution for the (non-relativistic) moments of the rapidity density in the Lieb-Liniger model. The trans-series is written explicitly in terms of a perturbative basis, which can be obtained from the already known perturbative expansion of the density by solving several ordinary differential equations. Unknown integration constants are fixed from Volin's method. We have checked that our solution satisfies the analytical consistency requirements including the newly derived resurgence relations and agrees with the high precision numerical solution. Our results also provides the full analytic trans-series for the capacitance of the coaxial circular plate capacitor.
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Anatomy of the simplest renormalon
In the large-N limit of the 2D O(N) scalar theory, the IR renormalon in the ground state energy is the correct asymptotic expansion of the exact solution, with the complete trans-series determined at NLO in 1/N; the two-point function has a similar non-Borel-summable renormalon.