The sum-integral conjecture for the gamma-function logarithm

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

lim⁡A→∞∑m=−AALog⁡(Γ(1+A+izm‾)Γ(1+A−izm‾)Γ(1+A+izm)Γ(1+A−izm))=lim⁡A→∞∫−AALog⁡(Γ(1+A+izm‾)Γ(1+A−izm‾)Γ(1+A+izm)Γ(1+A−izm)) 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.

References

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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