Self-Energy approximation for the running coupling constant in thermal ϕ4 theory using Imaginary Time Formalism
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DOI: 10.1007/jhep04(2025)178
Abstract: We investigate the temperature dependence of the mass scale, running coupling constant, and running mass in thermal ϕ4 theory using the Imaginary Time Formalism (ITF). Employing dimensional regularization and the minimal subtraction scheme, we compute… read more here.
Keywords: thermal theory; running coupling; energy; coupling constant ... See more keywords
Process-independent strong running coupling
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DOI: 10.1103/physrevd.96.054026
Abstract: We unify two widely different approaches to understanding the infrared behaviour of quantum chromodynamics (QCD), one essentially phenomenological, based on data, and the other computational, realised via quantum field equations in the continuum theory. Using… read more here.
Keywords: independent strong; running coupling; process independent; effective charge ... See more keywords
QCD Running Coupling in the Nonperturbative and Near-Perturbative Regimes.
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DOI: 10.1103/physrevlett.133.181901
Abstract: We use analytic continuation to extend the gauge-gravity duality nonperturbative description of the strong force coupling into the transition, near-perturbative, regime where perturbative effects become important. By excluding the unphysical region in coupling space from… read more here.
Keywords: nonperturbative near; running coupling; near perturbative; perturbative regimes ... See more keywords