4.7 Article

Gravitational form factors and mechanical properties of a quark at one loop in light-front Hamiltonian QCD

期刊

PHYSICAL REVIEW D
卷 105, 期 5, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.105.056017

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资金

  1. Department of Science and Technology (DST) , Government of India [SR/WOS-A/PM-6/2019(G)]
  2. Chinese Academy of Sciences Presidents International Fellowship Initiative [2021PM0021]
  3. Science and Engineering Research Board-Promoting Opportunities for Women in Exploratory Research Fellowship [SPF/2021/000102]

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In this study, we calculate the gravitational form factors and mechanical distributions of a quark state dressed with a gluon in QCD. Using the light-front Hamiltonian approach, we compare the results with model calculations for a nucleon and find that the mechanical properties of the quark state composite system are consistent with the model.
We calculate the gravitational form factors (GFFs) and pressure, shear, and energy distributions for a quark state dressed with a gluon at one loop in QCD. We use the light-front Hamiltonian approach. In the light-front gauge, we use a two-component formalism to eliminate the constrained fields. The state may be thought of as a perturbative model for a relativistic spin-1/2 composite system having a gluonic degree of freedom. We compare the results with model calculations for a nucleon.

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