2010/07/19 by Guang-jiong Ni, Ni, Guang-jiong, Jianjun Xu +3
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Quantum Physics (quant-ph)
paper · pdf · doi:10.48550/arxiv.1007.3054
openalex publication_date 2010/07/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
A regularization renormalization method (RRM) in quantum field theory (QFT) is discussed with simple rules: Once a divergent integral I is encountered, we first take its derivative with respect to some mass parameter enough times, rendering it just convergent. Then integrate it back into I with some arbitrary constants appeared. Third, the renormalization is nothing but a process of reconfirmation to fix relevant parameters (mass, charge, \etc) by experimental data via suitable choices of these constants. Various QFT problems, including the Lamb shift, the running coupling constants in QED and QCD, the λϕ4 model as well as Higgs mass in the standard model of particle physics, are discussed. Hence the calculation, though still approximate and limited in accuracy, can be performed in an unambiguous way with no explicit divergence, no counter term, no bare parameter and no arbitrarily running mass scale (like the μ in QCD).