Zobrazeno 1 - 10
of 85
pro vyhledávání: '"Jin Qingjun"'
We propose a new method for computing renormalization functions, which is based on the ideas of operator product expansion and large momentum expansion. In this method, the renormalization $Z$-factors are determined by the ultraviolet finiteness of W
Externí odkaz:
http://arxiv.org/abs/2410.03283
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 of unitarity. We develop an efficient method for calculating the norms
Externí odkaz:
http://arxiv.org/abs/2312.08445
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, while vanishing in four dimensions, are non-zero in general d dimensions
Externí odkaz:
http://arxiv.org/abs/2301.01786
Boundary operators are gauge invariant operators whose form factors correspond to boundary contributions of BCFW shifts. In gauge theory, the boundary operators contain infinite series, which are constrained by gauge symmetry. We compute the boundary
Externí odkaz:
http://arxiv.org/abs/2210.07025
Publikováno v:
J. High Energ. Phys. 2023, 39 (2023)
Evanescent operators are a special class of operators that vanish in four-dimensional spacetime but are non-zero in $d=4-2\epsilon$ dimensions. In this paper, we continue our systematic study of the evanescent operators in the pure Yang-Mills theory
Externí odkaz:
http://arxiv.org/abs/2208.08976
We prove the principle of maximal transcendentality for a class of form factors, including the general two-loop minimal form factors, the two-loop three-point form factor of ${\rm tr}(F^2)$, and the two-loop four-point form factor of ${\rm tr}(F^3)$.
Externí odkaz:
http://arxiv.org/abs/2205.12969
Autor:
Jin, Qingjun, Li, Yi
We compute the complete $Q$-dependence of anomalous dimensions of traceless symmetric tensor operator $\phi^Q$ in $O(N)$ scalar theory to five-loop. The renormalization factors are extracted from $\phi^Q\rightarrow Q\phi$ form factors, and the integr
Externí odkaz:
http://arxiv.org/abs/2205.02535
Autor:
Jin, Qingjun
We present an efficient algorithm to decompose the ultraviolet (UV) divergences of Feynman integrals to local divergences and various types of sub-divergences. With some reasonable assumptions the local divergences of Feynman integrals can be uniquel
Externí odkaz:
http://arxiv.org/abs/2203.11554
Evanescent operators are a special class of operators that vanish classically in four-dimensional spacetime, while in general dimensions they are non-zero and are expected to have non-trivial physical effects at the quantum loop level in dimensional
Externí odkaz:
http://arxiv.org/abs/2202.08285
We consider two-loop renormalization of high-dimensional Lorentz scalar operators in the gluonic sector of QCD. These operators appear also in the Higgs effective theory obtained by integrating out the top quark loop in the gluon fusion process. We f
Externí odkaz:
http://arxiv.org/abs/2011.02494