Chiral logs with staggered fermions

C. Aubin; C. Bernard; C. DeTar; Steven Gottlieb; Urs M. Heller; K. Orginos; R. Sugar; D. Toussaint

doi:10.1016/S0920-5632(03)01511-1

Chiral logs with staggered fermions

C. Aubin, C. Bernard, C. DeTar, Steven Gottlieb, Urs M. Heller, K. Orginos, R. Sugar, D. Toussaint

Physics

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We compute chiral logarithms in the presence of "taste" symmetry breaking of staggered fermions. The lagrangian of Lee and Sharpe is generalized and then used to calculate the logs in π and K masses. We correct an error in Ref. [1]. MILC data with three light dynamical flavors can be well fit by our formulas. However, two new chiral parameters, which describe O(a²) hairpin diagrams for taste-nonsinglet mesons, enter in the fits. To obtain precise results for the physical O(p⁴) coefficients, these new parameters will need to be bounded.

Original language	English (US)
Pages (from-to)	233-235
Number of pages	3
Journal	Nuclear Physics B - Proceedings Supplements
Volume	119
DOIs	https://doi.org/10.1016/S0920-5632(03)01511-1
State	Published - May 2003

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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10.1016/S0920-5632(03)01511-1

Cite this

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title = "Chiral logs with staggered fermions",

abstract = "We compute chiral logarithms in the presence of {"}taste{"} symmetry breaking of staggered fermions. The lagrangian of Lee and Sharpe is generalized and then used to calculate the logs in π and K masses. We correct an error in Ref. [1]. MILC data with three light dynamical flavors can be well fit by our formulas. However, two new chiral parameters, which describe O(a2) hairpin diagrams for taste-nonsinglet mesons, enter in the fits. To obtain precise results for the physical O(p4) coefficients, these new parameters will need to be bounded.",

author = "C. Aubin and C. Bernard and C. DeTar and Steven Gottlieb and Heller, {Urs M.} and K. Orginos and R. Sugar and D. Toussaint",

note = "Funding Information: We are grateful to M. Golterman, G. P. Lepage, and S. Sharpe for very useful discussions. Computations were performed at LANL, NERSC, NCSA, ORNL, PSC and SDSC. This work was supported by the U.S. DOE and NSF.",

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doi = "10.1016/S0920-5632(03)01511-1",

language = "English (US)",

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TY - JOUR

T1 - Chiral logs with staggered fermions

AU - Aubin, C.

AU - Bernard, C.

AU - DeTar, C.

AU - Gottlieb, Steven

AU - Heller, Urs M.

AU - Orginos, K.

AU - Sugar, R.

AU - Toussaint, D.

N1 - Funding Information: We are grateful to M. Golterman, G. P. Lepage, and S. Sharpe for very useful discussions. Computations were performed at LANL, NERSC, NCSA, ORNL, PSC and SDSC. This work was supported by the U.S. DOE and NSF.

PY - 2003/5

Y1 - 2003/5

N2 - We compute chiral logarithms in the presence of "taste" symmetry breaking of staggered fermions. The lagrangian of Lee and Sharpe is generalized and then used to calculate the logs in π and K masses. We correct an error in Ref. [1]. MILC data with three light dynamical flavors can be well fit by our formulas. However, two new chiral parameters, which describe O(a2) hairpin diagrams for taste-nonsinglet mesons, enter in the fits. To obtain precise results for the physical O(p4) coefficients, these new parameters will need to be bounded.

AB - We compute chiral logarithms in the presence of "taste" symmetry breaking of staggered fermions. The lagrangian of Lee and Sharpe is generalized and then used to calculate the logs in π and K masses. We correct an error in Ref. [1]. MILC data with three light dynamical flavors can be well fit by our formulas. However, two new chiral parameters, which describe O(a2) hairpin diagrams for taste-nonsinglet mesons, enter in the fits. To obtain precise results for the physical O(p4) coefficients, these new parameters will need to be bounded.

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DO - 10.1016/S0920-5632(03)01511-1

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VL - 119

SP - 233

EP - 235

JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

ER -

Chiral logs with staggered fermions

Abstract

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