3 papers
hep-th2026
The OPE Approach to Renormalization: Operator Mixing
Jinpeng Zhang, Qingjun Jin
Operator mixing is a generic and unavoidable feature in realistic quantum field theories, including QCD and effective field theories. Yet existing methods for computing anomalous d…
hep-th2026
Non-Hermitian Structure and Exceptional Points in Yang-Mills Theory from Analytic Continuation of Nc
Qingjun Jin, Ke Ren, Gang Yang +1
We show that analytic continuation of the number of colors, Nc, naturally endows Yang-Mills theory with a non-Hermitian structure. By examining the spectrum of the dilatation opera…
hep-ph2025
A graphical representation of gluonic operators
Qingjun Jin, Ke Ren, Gang Yang +1
Composite local operators are central to effective field theories (EFTs), as they define interaction vertices in effective Lagrangians and play a fundamental role in investigating…