The sum-integral conjecture for the gamma-function logarithm

Let zmz_m be the sequence of complex numbers used in the preceding gamma-function expression, and let ANA\in\mathbb{N}. The logarithm is taken on the branch denoted by Log\operatorname{Log}. Sum-integral conjecture. For any ANA\in\mathbb{N},

limAm=AALog(Γ(1+A+izm)Γ(1+Aizm)Γ(1+A+izm)Γ(1+Aizm))=limAAALog(Γ(1+A+izm)Γ(1+Aizm)Γ(1+A+izm)Γ(1+Aizm))dm.\lim\limits_{A\to\infty} \sum\limits_{m=-A}^A \operatorname{Log}\left(\frac{\Gamma\left(1+A+i\overline{z_m}\right)\Gamma\left(1+A-i \overline{z_m}\right)}{\Gamma\left(1+A+iz_m\right)\Gamma \left(1+A-iz_m\right)}\right) = \lim\limits_{A\to\infty} \int\limits_{-A}^A \operatorname{Log}\left(\frac{\Gamma\left(1+A+i\overline{z_m}\right)\Gamma\left(1+A-i \overline{z_m}\right)}{\Gamma\left(1+A+iz_m\right)\Gamma \left(1+A-iz_m\right)}\right)\,dm.

This conjectured replacement of the finite sum by an integral is used to analyze the gamma-function contribution to the Hall conductivity of a chiral p±ipp\pm ip superconductor; the supplied text gives no evidence that the assertion has been proved or disproved.

Sources & referencesView supporting material

Primary source

Daniel Ariad, Yshai Avishai and Eytan Grosfeld, “How vortex bound states affect the Hall conductivity of a chiral pi p superconductor”, arXiv:1603.00840 (2018).

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