Numerical results for gauge theories near the conformal window

4th Symposium on Prospects in the Physics of Discrete Symmetries

Lucini, Biagio^1

Physics Department, College of Science, Swansea University, Singleton Park, Swansea

SA2 8PP, United Kingdom^1

关键词: Candidate models;    Dirac fermions;    Electroweak symmetry breaking;    First principle calculations;    Numerical results;    Quantum field theory;    Strong interaction;    The standard model;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/631/1/012065/pdf
DOI  :  10.1088/1742-6596/631/1/012065

来源: IOP

【 摘 要 】

A novel strong interaction beyond the standard model could provide a dynamical explanation of electroweak symmetry breaking. Experimental results strongly constrain properties of models that realise this mechanism. Whether these constraints are obeyed by any strongly interacting quantum field theory is a non-perturbative problem that needs to be addressed by first-principle calculations. Monte Carlo simulations of lattice regularised gauge theories is a powerful tool that enables us to address this question. Recently various lattice investigations have appeared that have studied candidate models of strongly interacting dynamics beyond the standard model. After a brief review of the main methods and of some recent results, we focus on the analysis of SU(2) gauge theory with one adjoint Dirac fermion flavour, which is shown to have a near-conformal behaviour with an anomalous dimension of order one. The implications of our findings are also discussed.