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Title: Lattice Simulations and Infrared Conformality

We examine several recent lattice-simulation data sets, asking whether they are consistent with infrared conformality. We observe, in particular, that for an SU(3) gauge theory with 12 Dirac fermions in the fundamental representation, recent simulation data can be described assuming infrared conformality. Lattice simulations include a fermion mass m which is then extrapolated to zero, and we note that this data can be fit by a small-m expansion, allowing a controlled extrapolation. We also note that the conformal hypothesis does not work well for two theories that are known or expected to be confining and chirally broken, and that it does work well for another theory expected to be infrared conformal.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [3]
  1. Yale Univ., New Haven, CT (United States). Dept. of Physics
  2. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States). Theoretical Physics Dept.
  3. Boston Univ., MA (United States). Dept. of Physics
Publication Date:
OSTI Identifier:
1016882
Report Number(s):
FERMILAB-PUB--11-269-T
Journal ID: ISSN 1550-7998; arXiv eprint number arXiv:1106.2148; TRN: US1103139
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 84; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS, 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; EXTRAPOLATION; FERMIONS; HYPOTHESIS; SIMULATION Lattice, Phenomenology-HEP