Flavor symmetry breaking in lattice QCD with a mixed action

Bär, Oliver; Golterman, Maarten; Shamir, Yigal

doi:10.1103/PhysRevD.83.054501

Title: Flavor symmetry breaking in lattice QCD with a mixed action

Full Record
Other Related Research

Authors:: Bär, Oliver; Golterman, Maarten; Shamir, Yigal

Publication Date:: Thu Mar 03 00:00:00 EST 2011

Sponsoring Org.:: USDOE

OSTI Identifier:: 1099980

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Physical Review D

Additional Journal Information:: Journal Volume: 83; Journal Issue: 5; Journal ID: ISSN 1550-7998

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Citation Formats


                    Bär, Oliver, Golterman, Maarten, and Shamir, Yigal. Flavor symmetry breaking in lattice QCD with a mixed action.  United States: N. p., 2011. 
Web.  doi:10.1103/PhysRevD.83.054501.

Copy to clipboard


                    Bär, Oliver, Golterman, Maarten, & Shamir, Yigal. Flavor symmetry breaking in lattice QCD with a mixed action.  United States.  https://doi.org/10.1103/PhysRevD.83.054501

Copy to clipboard


                    Bär, Oliver, Golterman, Maarten, and Shamir, Yigal. Thu .  
"Flavor symmetry breaking in lattice QCD with a mixed action".  United States.  https://doi.org/10.1103/PhysRevD.83.054501.

Copy to clipboard


                    
@article{osti_1099980,

  title        = {Flavor symmetry breaking in lattice QCD with a mixed action},

  author       = {Bär, Oliver and Golterman, Maarten and Shamir, Yigal},

  abstractNote = {},

  doi          = {10.1103/PhysRevD.83.054501},

  journal      = {Physical Review D},

  number       = 5,

  volume       = 83,

  place        = {United States},

  year         = {Thu Mar 03 00:00:00 EST 2011},

  month        = {Thu Mar 03 00:00:00 EST 2011}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.83.054501

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 1 work

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Flavor symmetry breaking in lattice QCD with a mixed action

Journal Article Baer, Oliver ; Golterman, Maarten ; Shamir, Yigal - Physical Review. D, Particles Fields

We study the phase structure of mixed-action QCD with two Wilson sea quarks and any number of chiral valence quarks (and ghosts), starting from the chiral Lagrangian. A priori the effective theory allows for a rich phase structure, including a phase with a condensate made of sea and valence quarks. In such a phase, mass eigenstates would become admixtures of sea and valence fields, and pure-sea correlation functions would depend on the parameters of the valence sector, in contradiction with the actual setup of mixed-action simulations. Using that the spectrum of the chiral Dirac operator has a gap for nonzeromore »« less
https://doi.org/10.1103/PHYSREVD.83.054501
Chiral-symmetry breaking in lattice QCD with two and four fermion flavors

Journal Article Gottlieb, S ; Liu, W ; Toussaint, D ; ... - Phys. Rev. D; (United States)

We study the thermodynamics of lattice quantum chromodynamics for two and four flavors of staggered fermions at temperature T = 1/4a, where a is the lattice spacing. For four flavors with mass below 0.05/a we find evidence for a first-order chiral-symmetry-breaking phase transition. For two flavors there is an increasingly rapid crossover as the mass is lowered, but we find no conclusive evidence of a first-order transition for quark masses down to 0.0125/a. A rough estimate is made of the zero-mass transition temperature for two flavors of quarks.
https://doi.org/10.1103/PhysRevD.35.3972
Spontaneous breaking of flavor symmetry and parity in lattice QCD with Wilson fermions

Journal Article Aoki, S ; Gocksch, A - Physical Review, D (Particles Fields); (United States)

By adding a symmetry-breaking source term of the form {ital Hi}{bar {psi}}{gamma}{sub 5}{tau}{sub 3}{psi} to the Wilson fermion action for two degenerate flavors of quarks, we provide evidence for the existence of a phase at large values of the hopping parameter {kappa} in which both parity {ital and} flavor symmetries are spontaneously broken and which is separate from the high-temperature'' phase. This is done by means of numerical simulations of lattice QCD employing the hybrid Monte Carlo algorithm.
https://doi.org/10.1103/PhysRevD.45.3845
Improved staggered quark actions with reduced flavor symmetry violations for lattice QCD

Journal Article Lagaee, J ; Sinclair, D K - Physical Review, D

We introduce a new class of actions for staggered quarks in lattice QCD which significantly reduce flavor symmetry violations in the pion mass spectrum. An action introduced by the MILC Collaboration for the same purpose is seen to be a special case. We discuss how such actions arise from a systematic attempt to reduce flavor symmetry violations in the weak coupling limit. It is shown that for quenched lattice QCD at 6/g{sup 2}=5.7, representative actions of this class give a considerable reduction in flavor symmetry violation over the standard staggered action, and a significant reduction over what is achieved bymore »« less
https://doi.org/10.1103/PhysRevD.59.014511
Neutral B-meson mixing from three-flavor lattice QCD: Determination of the SU(3)-breaking ratio \xi

Journal Article Bazavov, A ; /Brookhaven ; Bernard, C ; ... - Physical Review. D, Condensed Matter and Materials Physics

We study SU(3)-breaking effects in the neutral B{sub d}-{bar B}{sub d} and B{sub s}-{bar B}{sub s} systems with unquenched N{sub t}=2+1 lattice quantum chromodynamics (QCD). We calculate the relevant matrix elements on the MILC collaboration's gauge configurations with asqtad-improved staggered sea quarks. For the valence light-quarks (u, d, and s) we use the asqtad action, while for b quarks we use the Fermilab action. We obtain {xi}=f{sub B{sub s}} {radical}{ovr B{sub B{sub s}}}/f{sub B{sub d}}{radical}{ovr B{sub B{sub d}}}=1.268{+-}0.063. We also present results for the ratio of bag parameters B{sub B{sub s}}/B{sub B{sub d}} and the ratio of Cabibbo-Kobayashi-Maskawa matrix elementsmore »« less
https://doi.org/10.1103/PhysRevD.86.034503

Similar Records