Hidden Conformal Symmetry from the Lattice

Collaboration, LSD, Appelquist, T, Brower, RC, Cushman, KK, Fleming, GT, Gasbarro, A, Hasenfratz, A, Ingoldby, J, Jin, XY, Neil, ET
et al (show 7 more authors) (2023) Hidden Conformal Symmetry from the Lattice. [Preprint]

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We analyze newly expanded and refined data from lattice studies of an SU(3) gauge theory with eight Dirac fermions in the fundamental representation. We focus on the light composite states emerging from these studies, consisting of a set of pseudoscalars and a single light scalar. We first consider the view that this theory is just outside the conformal window. In this case, the pseudoscalars arise from spontaneous breaking of chiral symmetry. Identifying the scalar in this case as an approximate dilaton, we fit the lattice data to a dilaton effective field theory, finding that it yields a good fit even at lowest order. For comparison, we then consider the possibility that the theory is inside the conformal window. The fermion mass provides a deformation, triggering confinement. We employ simple scaling laws to fit the lattice data, and find that it is of lesser quality.

Item Type: Preprint
Additional Information: 7 pages, 2 figures, version accepted for publication
Uncontrolled Keywords: hep-lat, hep-lat, hep-ph
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 22 May 2023 07:25
Last Modified: 29 Dec 2023 17:17
DOI: 10.48550/arXiv.2305.03665
Open Access URL: https://doi.org/10.48550/arXiv.2305.03665
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3170570