Appelquist, T, Brower, RC, Fleming, GT, Kiskis, J, Lin, MF, Neil, ET, Osborn, JC, Rebbi, C, Rinaldi, E, Schaich, D 
ORCID: 0000-0002-9826-2951 et al (show 6 more authors)
(2014)
Lattice simulations with eight flavors of domain wall fermions in SU(3) gauge theory.
PHYSICAL REVIEW D, 90 (11).
114502-.
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1405.4752v2.pdf - Author Accepted Manuscript Download (3MB) | Preview |
Abstract
We study an SU(3) gauge theory with Nf=8 degenerate flavors of light fermions in the fundamental representation. Using the domain wall fermion formulation, we investigate the light hadron spectrum, chiral condensate and electroweak S parameter. We consider a range of light fermion masses on two lattice volumes at a single gauge coupling chosen so that IR scales approximately match those from our previous studies of the two- and six-flavor systems. Our results for the Nf=8 spectrum suggest spontaneous chiral symmetry breaking, though fits to the fermion mass dependence of spectral quantities do not strongly disfavor the hypothesis of mass-deformed infrared conformality. Compared to Nf=2 we observe a significant enhancement of the chiral condensate relative to the symmetry breaking scale F, similar to the situation for Nf=6. The reduction of the S parameter, related to parity doubling in the vector and axial-vector channels, is also comparable to our six-flavor results.
| Item Type: | Article |
|---|---|
| Additional Information: | Lattice Strong Dynamics Collaboration keywords: printed, S parameter, read, SU3 fund Nf8 |
| Uncontrolled Keywords: | hep-lat, hep-lat, hep-ph |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 09 Mar 2020 09:00 |
| Last Modified: | 18 Jan 2023 23:58 |
| DOI: | 10.1103/PhysRevD.90.114502 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3078194 |
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