Topological susceptibility in QCD with two flavors and 3-5 colors: A pilot study

DeGrand, Thomas

doi:10.1103/PhysRevD.101.114509

Title: Topological susceptibility in QCD with two flavors and 3-5 colors: A pilot study

Journal Article · 24 June 2020 · Physical Review D

DOI: https://doi.org/10.1103/PhysRevD.101.114509 · OSTI ID:1635108

^[1]

Univ. of Colorado, Boulder, CO (United States); University of Colorado

I present a calculation of the topological susceptibility χ_T in SU(N_c) gauge theory with N_c = 3–5 colors and N_f = 2 degenerate flavors of fermions. The results lie on a common curve when expressed in terms of the combination N_cm²_PSt₀ where m_PS is the pseudoscalar meson mass and t₀ is the flow parameter. χ_T approaches its quenched value as the pseudoscalar mass becomes large. The lattice simulations use clover fermions. They are done at a single lattice spacing, roughly matched across N_c, and over a restricted range of fermion masses.

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Research Organization:: Univ. of Colorado, Boulder, CO (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Grant/Contract Number:: SC0010005; AC02-07CH11359

OSTI ID:: 1635108

Alternate ID(s):: OSTI ID: 1635126

Journal Information:: Physical Review D, Journal Name: Physical Review D Journal Issue: 11 Vol. 101; ISSN PRVDAQ; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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