Quantum vertex algebras and their phi-coordinated quasi modules

We develop a theory of $ϕ$-coordinated (quasi) modules for a nonlocal vertex algebra and we establish a conceptual construction of nonlocal vertex algebras and their $ϕ$-coordinated (quasi) modules, where $ϕ$ is what we call an associate of the one-dimensional additive formal group. By specializing $ϕ$ to a particular associate, we obtain a new construction of weak quantum vertex algebras in the sense of \cite{li-qva1}. As an application, we associate weak quantum vertex algebras to quantum affine algebras, and we also associate quantum vertex algebras and $ϕ$-coordinated modules to a certain quantum $βγ$-system.

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