Investigating SU(3) with Nf=8 fundamental fermions at strong renormalized coupling
Conference
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OSTI ID:2482541
- U. Colorado, Boulder
- U. Siegen (main)
Lattice simulations have observed a novel strong coupling symmetric mass generation (SMG) phase for the SU(3) gauge system with $$N_f=8$$ fundamental fermions (represented by two sets of staggered fields) at very large renormalized coupling ($$g^2_{GF} \gtrsim 25$$). The results of Phys.Rev.D 106 (2022) 014513 suggest that the SMG phase is separated from the weak coupling, conformal phase by a continuous phase transition, implying that the SMG phase exists in the continuum limit. To scrutinize these findings, we are generating a set of large volume zero temperature ensembles using nHYP improved staggered fermions with additional Pauli-Villars fields to tame gauge field fluctuations. We consider the low-lying meson spectrum and verify the existence of the SMG phase. Based on a finite size scaling analysis we predict that the phase transition between the strong and weak coupling phases is likely governed by a merged fixed point that is ultraviolet in the strong coupling but infrared in the weak coupling side. This finding suggests that the SU(3) 8-flavor system sits at the opening of the conformal window
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Contributing Organization:
- Lattice Strong Dynamics
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 2482541
- Report Number(s):
- FERMILAB-CONF-24-0928-V; SI-HEP-2024-28; arXiv:2412.10322; oai:inspirehep.net:2859381
- Country of Publication:
- United States
- Language:
- English
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