Scalesetting, flavor dependence, and chiral symmetry restoration
Abstract
Here, we determine the flavor dependence of the renormalizationgroupinvariant running interaction through judicious use of both unquenched DysonSchwinger equation and lattice results for QCD’s gaugesector twopoint functions. An important step is the introduction of a physical scale setting procedure that enables a realistic expression of the effect of different numbers of active quark flavours on the interaction. Using this running interaction in concert with a well constrained class of dressed–gluonquark vertices, we estimate the critical number of active lighterquarks above which dynamical chiral symmetry breaking becomes impossible: n ^{cr} _{f} ≈ 9; and hence in whose neighborhood QCD is plausibly a conformal theory.
 Authors:
 Publication Date:
 Research Org.:
 Argonne National Lab. (ANL), Argonne, IL (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC), Nuclear Physics (NP) (SC26)
 OSTI Identifier:
 1369032
 Grant/Contract Number:
 AC0206CH11357; FPA201453631C2P
 Resource Type:
 Journal Article: Accepted Manuscript
 Journal Name:
 Physical Review D
 Additional Journal Information:
 Journal Volume: 95; Journal Issue: 11; Journal ID: ISSN 24700010
 Publisher:
 American Physical Society (APS)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DysonSchwinger equations; dynamical chiral symmetry breaking; gluonquark vertex; nonAbelian gaugesector dynamics; numerical simulations of latticeregularised QCD
Citation Formats
Binosi, D, Roberts, Craig D., and RodriguezQuintero, J. Scalesetting, flavor dependence, and chiral symmetry restoration. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.95.114009.
Binosi, D, Roberts, Craig D., & RodriguezQuintero, J. Scalesetting, flavor dependence, and chiral symmetry restoration. United States. doi:10.1103/PhysRevD.95.114009.
Binosi, D, Roberts, Craig D., and RodriguezQuintero, J. 2017.
"Scalesetting, flavor dependence, and chiral symmetry restoration". United States.
doi:10.1103/PhysRevD.95.114009.
@article{osti_1369032,
title = {Scalesetting, flavor dependence, and chiral symmetry restoration},
author = {Binosi, D and Roberts, Craig D. and RodriguezQuintero, J.},
abstractNote = {Here, we determine the flavor dependence of the renormalizationgroupinvariant running interaction through judicious use of both unquenched DysonSchwinger equation and lattice results for QCD’s gaugesector twopoint functions. An important step is the introduction of a physical scale setting procedure that enables a realistic expression of the effect of different numbers of active quark flavours on the interaction. Using this running interaction in concert with a well constrained class of dressed–gluonquark vertices, we estimate the critical number of active lighterquarks above which dynamical chiral symmetry breaking becomes impossible: ncrf ≈ 9; and hence in whose neighborhood QCD is plausibly a conformal theory.},
doi = {10.1103/PhysRevD.95.114009},
journal = {Physical Review D},
number = 11,
volume = 95,
place = {United States},
year = 2017,
month = 6
}
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