Nonperturbative matching between equal-time and lightcone quantization

• Published in: The journal of high energy physics Vol. 2020; no. 10; pp. 1 - 27
• Main Authors: Fitzpatrick, A. Liam, Katz, Emanuel, Walters, Matthew T.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.10.2020; Springer Nature B.V; Springer Nature; SpringerOpen
• Subjects: Approximation; Classical and Quantum Gravitation; Conformal Field Theory; Elementary Particles; Field Theories in Lower Dimensions; High energy physics; Matching; Measurement; Nonperturbative Effects; Numerical methods; Parameters; Perturbation theory; Physics; Physics and Astronomy; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; String Theory; Field Theories in Lower Dimensions; Conformal Field Theory; Nonperturbative Effects

A bstract We investigate the nonperturbative relation between lightcone (LC) and standard equal-time (ET) quantization in the context of λϕ 4 theory in d = 2. We discuss the perturbative matching between bare parameters and the failure of its naive nonperturbative extension. We argue that they are n...