Reznikov's period integral conjecture for closed geodesics on hyperbolic surfaces

Let (M,g)(M,g) be a compact hyperbolic surface, let eλe_\lambda be an eigenfunction of Δg\sqrt{-\Delta_g} with eigenvalue λ\lambda, and let γ\gamma be a periodic geodesic or a geodesic circle on MM. Given ε>0\varepsilon>0, let CεC_\varepsilon depend on ε\varepsilon, MM, and the length of γper\gamma_{per}. Reznikov's period integral conjecture. One has

γeλdsCελ12+ε.\left|\int_{\gamma} e_\lambda\,ds\right|\leq C_\varepsilon\lambda^{-\frac12+\varepsilon}.

This is an analogue of the Lindelöf conjecture for certain LL-functions and would substantially improve the uniform boundedness estimate known for periodic geodesics. The supplied text does not indicate whether the conjecture has been resolved.

Sources & referencesView supporting material

Primary source

Emmett L. Wyman and Yakun Xi, “Improved Generalized Periods Estimates Over Curves on Riemannian Surfaces with Nonpositive Curvature”, arXiv:1807.00041 (2018).

Additional references

3 papers in this index state this conjecture (2017–2018). The statement above is taken from the most recent of them; the others are arXiv:1806.01424, arXiv:1705.01688.

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