Infinite Analysis Seminar Tokyo

Seminar information archive ~04/16Next seminarFuture seminars 04/17~

Date, time & place Saturday 13:30 - 16:00 117Room #117 (Graduate School of Math. Sci. Bldg.)

2018/10/04

16:00-17:00   Room #002 (Graduate School of Math. Sci. Bldg.)
Andrew Kels (Graduate School of Arts and Sciences, University of Tokyo)
Integrable quad equations derived from the quantum Yang-Baxter
equation. (ENGLISH)
[ Abstract ]
I will give an overview of an explicit correspondence that exists between
two different types of integrable equations; 1) the quantum Yang-Baxter
equation in its star-triangle relation (STR) form, and 2) the classical
3D-consistent quad equations in the Adler-Bobenko-Suris (ABS)
classification. The fundamental aspect of this correspondence is that the
equation of the critical point of a STR is equivalent to an ABS quad
equation. The STR's considered here are in fact equivalent to
hypergeometric integral transformation formulas. For example, a STR for
$H1_{(\varepsilon=0)}$ corresponds to the Euler Beta function, a STR for
$Q1_{(\delta=0)}$ corresponds to the $n=1$ Selberg integral, and STR's for
$H2_{\varepsilon=0,1}$, $H1_{(\varepsilon=1)}$, correspond to different
hypergeometric integral formulas of Barnes. I will discuss some of these
examples and some directions for future research.