Analysis of a dilaton EFT for lattice data

• Published in: The journal of high energy physics Vol. 2018; no. 3; pp. 1 - 17
• Main Authors: Appelquist, Thomas, Ingoldby, James, Piai, Maurizio
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2018; Springer Nature B.V; SpringerOpen
• Subjects: Classical and Quantum Gravitation; Confining; Dilatons; Elementary Particles; Fermions; Field theory; Gauge theory; High energy physics; Lattice field theory simulation; Parameter uncertainty; Phenomenological Models; Physics; Physics and Astronomy; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; Representations; String Theory; Lattice field theory simulation; Phenomenological Models
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP03(2018)039

A bstract In a recent paper, we developed and applied a dilaton-based effective field theory (EFT) to the analysis of lattice-simulation data for a class of confining gauge theories with near-conformal infrared behavior. It was employed there at the classical level to the SU(3) gauge theory with eight Dirac fermions in the fundamental representation. Here, we explore the structure of the EFT further. We examine its application to lattice data (newly updated) for the SU(3) theory with eight Dirac fermions in the fundamental representation, and the SU(3) theory with two Dirac fermions in the sextet representation. In each case, we determine additional fit parameters and discuss uncertainties associated with extrapolation to zero fermion mass. We highlight universal features, study the EFT at the quantum loop level and discuss the importance of future lattice simulations.