2017/02/28 by Thomas Appelquist, James Ingoldby, Maurizio Piai · 91 citations
Mathematics · Physics and Astronomy · #Boson #Dilaton #Effective field theory #Fermion #Gauge theory #Goldstone boson #High-Energy Particle Collisions Research #Lattice (music) #Lattice field theory #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Scalar (mathematics) #Scalar field #Theoretical physics #hep-lat #hep-ph
paper · pdf · doi:10.1007/jhep07(2017)035
published in Journal of High Energy Physics 2017(7) (Springer Nature) · 13 pages, 2 figures, version accepted at JHEP
arxiv created 2017/06/27 · openalex publication_date 2017/07/01 · arxiv updated 2017/08/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We develop an effective-field-theory (EFT) framework to analyze the spectra emerging from lattice simulations of a large class of confining gauge theories. Simulations of these theories, for which the light-fermion count is not far below the critical value for transition to infrared conformal behavior, have indicated the presence of a remarkably light singlet scalar particle. We incorporate this particle by including a scalar field in the EFT along with the Nambu-Goldstone bosons (NGB’s), and discuss the application of this EFT to lattice data. We highlight the feature that data on the NGB’s alone can tightly restrict the form of the scalar interactions. As an example, we apply the framework to lattice data for an SU(3) gauge theory with eight fermion flavors, concluding that the EFT can describe the data well.