Title: Solutions of tetrahedron equation from quantum cluster algebra associated with symmetric butterfly quiver

Abstract: We construct a new solution to the tetrahedron equation by further pursuing the quantum cluster algebra approach in our previous works. The key ingredients include a symmetric butterfly quiver attached to the wiring diagrams for the longest element of type $A$ Weyl groups and the implementation of quantum $Y$-variables through the $q$-Weyl algebra. The solution consists of four products of quantum dilogarithms, incorporating a total of seven parameters. By exploring both the coordinate and momentum representations, along with their modular double counterparts, our solution encompasses various known three-dimensional (3D) $R$-matrices. These include those obtained by Kapranov-Voevodsky ('94) utilizing the quantized coordinate ring, Bazhanov-Mangazeev-Sergeev ('10) from a quantum geometry perspective, Kuniba-Matsuike-Yoneyama ('23) linked with the quantized six-vertex model, and Inoue-Kuniba-Terashima ('23) associated with the Fock-Goncharov quiver. The 3D $R$-matrix presented in this paper offers a unified perspective on these existing solutions, coalescing them within the framework of quantum cluster algebra.