99 citations · 277 across the 26 of their papers we have counts for
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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…
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…
Gluonic evanescent operators: negative-norm states and complex anomalous dimensions
Qingjun Jin, Ke Ren, Gang Yang +1
In this paper, we build on our previous work to further investigate the role of evanescent operators in gauge theories, with a particular focus on their contribution to violations…
Is Yang-Mills Theory Unitary in Fractional Spacetime Dimensions?
Qingjun Jin, Ke Ren, Gang Yang +1
We present concrete evidence that Yang-Mills theory exhibits non-unitarity in non-integer spacetime dimensions. This violation of unitarity stems from evanescent operators that, wh…
Wilson Lines and Boundary Operators of BCFW Shifts
Rijun Huang, Qingjun Jin, Yi Li
Boundary operators are gauge invariant operators whose form factors correspond to boundary contributions of BCFW shifts. In gauge theory, the boundary operators contain infinite se…
Gluonic evanescent operators: two-loop anomalous dimensions
Qingjun Jin, Ke Ren, Gang Yang +1
Evanescent operators are a special class of operators that vanish in four-dimensional spacetime but are non-zero in dimensions. In this paper, we continue our systematic s…