Complex binomial theorem and pentagon identities

Fuente: arXiv
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Autori principali: Belousov, N. M., Sarkissian, G. A., Spiridonov, V. P.
Natura: Preprint
Pubblicazione: 2024
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author Belousov, N. M.
Sarkissian, G. A.
Spiridonov, V. P.
author_facet Belousov, N. M.
Sarkissian, G. A.
Spiridonov, V. P.
contents We consider different pentagon identities realized by the hyperbolic hypergeometric functions and investigate their degenerations to the level of complex hypergeometric functions. In particular, we show that one of the degenerations yields the complex binomial theorem which coincides with the Fourier transformation of the complex analogue of the Euler beta integral. At the bottom we obtain a Fourier transformation formula for the complex gamma function. This is done with the help of a new type of the limit $ω_1+ω_2\to 0$ (or $b\to \textrm{i}$ in two-dimensional conformal field theory) applied to the hyperbolic hypergeometric integrals.
format Preprint
id arxiv_https___arxiv_org_abs_2412_07562
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Complex binomial theorem and pentagon identities
Belousov, N. M.
Sarkissian, G. A.
Spiridonov, V. P.
Classical Analysis and ODEs
High Energy Physics - Theory
Mathematical Physics
We consider different pentagon identities realized by the hyperbolic hypergeometric functions and investigate their degenerations to the level of complex hypergeometric functions. In particular, we show that one of the degenerations yields the complex binomial theorem which coincides with the Fourier transformation of the complex analogue of the Euler beta integral. At the bottom we obtain a Fourier transformation formula for the complex gamma function. This is done with the help of a new type of the limit $ω_1+ω_2\to 0$ (or $b\to \textrm{i}$ in two-dimensional conformal field theory) applied to the hyperbolic hypergeometric integrals.
title Complex binomial theorem and pentagon identities
topic Classical Analysis and ODEs
High Energy Physics - Theory
Mathematical Physics
url https://arxiv.org/abs/2412.07562