6 papers
Shear and bulk viscosities of the gluon plasma across the transition temperature from lattice QCD
Heng-Tong Ding, Hai-Tao Shu, Cheng Zhang
We investigate the temperature dependence of the shear viscosity () and bulk viscosity () of the gluon plasma using lattice QCD over the range 0.76--2.25, extending…
-invariant integrable systems from factorisation of linear differential and difference operators
Frank Nijhoff, Linyu Peng, Cheng Zhang +1
In this paper, we present a unified approach to constructing continuous and discrete -invariant integrable systems, formulated in terms of the common dependent var…
On consistency around a cube and Q3 analogue of the lattice Boussinesq equation
Pengyu Sun, Cheng Zhang, Frank Nijhoff
In this paper, we present two new aspects of lattice Boussinesq (BSQ) equations. First, we show that the lattice potential BSQ (lpBSQ) equation defined on a nine-point square latti…
On the formulation of the NQC variable
Leilei Shi, Cheng Zhang, Da-jun Zhang
The Nijhoff-Quispel-Capel (NQC) equation is a general lattice quadrilateral equation presented in terms of a function where and serve as extra parameters. It can b…
On the Dbar method and direct linearization approach of the lattice KdV type equations
Leilei Shi, Cheng Zhang, Da-jun Zhang
The purpose of this paper is to bridge the gap between the Dbar method and the direct linearization approach for the lattice Korteweg-de Vries (KdV) type equations. We develop the…
The elliptic lattice KdV system revisited
Frank Nijhoff, Cheng Zhang, Da-jun Zhang
In a previous paper [Nijhoff,Puttock,2003], a 2-parameter extension of the lattice potential KdV equation was derived, associated with an elliptic curve. This comprises a rather co…