Application of dilaton chiral perturbation theory to N f = 8 , SU(3) spectral data

Golterman, Maarten; Neil, Ethan T.; Shamir, Yigal

doi:10.1103/PhysRevD.102.034515

Title: Application of dilaton chiral perturbation theory to $N_{f} = 8$ , SU(3) spectral data

Abstract

We extend dilaton chiral perturbation theory (dChPT) to include the taste splittings in the Nambu-Goldstone sector observed in lattice simulations of near-conformal theories with staggered fermions. We then apply dChPT to a recent simulation by the LSD collaboration of the SU(3) gauge theory with 8 fermions in the fundamental representation, which is believed to exhibit near-conformal behavior in the infrared, and in which a light singlet scalar state, nearly degenerate with the pions, has been found. We find that the mesonic sector of this theory can be successfully described by dChPT, including, in particular, the mesonic taste splittings found in the simulation. We confirm that current simulations of this theory are in the "large-mass" regime.

Authors:

;

Publication Date:: Mon Aug 31 00:00:00 EDT 2020

Research Org.:: San Francisco State Univ., CA (United States); Univ. of Colorado, Boulder, CO (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP); Israel Science Foundation (ISF)

OSTI Identifier:: 1656692

Alternate Identifier(s):: OSTI ID: 1658961; OSTI ID: 1764439; OSTI ID: 1774222; OSTI ID: 1901674

Grant/Contract Number:: SC0013682; SC0010005; 491/17

Resource Type:: Published Article

Journal Name:: Physical Review. D.

Additional Journal Information:: Journal Name: Physical Review. D. Journal Volume: 102 Journal Issue: 3; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Effective field theory; Chiral symmetry; Conformal symmetry; Lattice gauge theory

Citation Formats


                    Golterman, Maarten, Neil, Ethan T., and Shamir, Yigal. Application of dilaton chiral perturbation theory to N f = 8 , SU(3) spectral data.  United States: N. p., 2020. 
Web.  doi:10.1103/PhysRevD.102.034515.

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                    Golterman, Maarten, Neil, Ethan T., & Shamir, Yigal. Application of dilaton chiral perturbation theory to N f = 8 , SU(3) spectral data.  United States.  https://doi.org/10.1103/PhysRevD.102.034515

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                    Golterman, Maarten, Neil, Ethan T., and Shamir, Yigal. Mon .  
"Application of dilaton chiral perturbation theory to N f = 8 , SU(3) spectral data".  United States.  https://doi.org/10.1103/PhysRevD.102.034515.

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@article{osti_1656692,

  title        = {Application of dilaton chiral perturbation theory to N f = 8 , SU(3) spectral data},

  author       = {Golterman, Maarten and Neil, Ethan T. and Shamir, Yigal},

  abstractNote = {We extend dilaton chiral perturbation theory (dChPT) to include the taste splittings in the Nambu-Goldstone sector observed in lattice simulations of near-conformal theories with staggered fermions. We then apply dChPT to a recent simulation by the LSD collaboration of the SU(3) gauge theory with 8 fermions in the fundamental representation, which is believed to exhibit near-conformal behavior in the infrared, and in which a light singlet scalar state, nearly degenerate with the pions, has been found. We find that the mesonic sector of this theory can be successfully described by dChPT, including, in particular, the mesonic taste splittings found in the simulation. We confirm that current simulations of this theory are in the "large-mass" regime.},

  doi          = {10.1103/PhysRevD.102.034515},

  journal      = {Physical Review. D.},

  number       = 3,

  volume       = 102,

  place        = {United States},

  year         = {Mon Aug 31 00:00:00 EDT 2020},

  month        = {Mon Aug 31 00:00:00 EDT 2020}

}

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Title: Application of dilaton chiral perturbation theory to N f = 8 , SU(3) spectral data

Abstract

Citation Formats

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Title: Application of dilaton chiral perturbation theory to $N_{f} = 8$ , SU(3) spectral data

The twelve-flavor β-function and dilaton tests of the sextet scalar
journal, January 2018

Light flavor-singlet scalars and walking signals in $N_{f} = 8$ QCD on the lattice
journal, July 2017

Nonperturbative QCD simulations with $2 + 1$ flavors of improved staggered quarks
journal, May 2010

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journal, August 2003

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journal, December 2012

Effective action for pions and a dilatonic meson
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Some aspects of a unified approach to gauge, dual and Gribov theories
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