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Title: On the Feynman-Hellmann theorem in quantum field theory and the calculation of matrix elements

Journal Article · · Physical Review D
 [1];  [2];  [2];  [3];  [4]
  1. Univ. of Glasgow, Glasgow (United Kingdom); The College of William and Mary, Williamsburg, VA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. The College of William and Mary, Williamsburg, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); The College of William and Mary, Williamsburg, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

© 2017 American Physical Society. The Feynman-Hellmann theorem can be derived from the long Euclidean-time limit of correlation functions determined with functional derivatives of the partition function. Using this insight, we fully develop an improved method for computing matrix elements of external currents utilizing only two-point correlation functions. Our method applies to matrix elements of any external bilinear current, including nonzero momentum transfer, flavor-changing, and two or more current insertion matrix elements. The ability to identify and control all the systematic uncertainties in the analysis of the correlation functions stems from the unique time dependence of the ground-state matrix elements and the fact that all excited states and contact terms are Euclidean-time dependent. We demonstrate the utility of our method with a calculation of the nucleon axial charge using gradient-flowed domain-wall valence quarks on the Nf=2+1+1 MILC highly improved staggered quark ensemble with lattice spacing and pion mass of approximately 0.15 fm and 310 MeV respectively. We show full control over excited-state systematics with the new method and obtain a value of gA=1.213(26) with a quark-mass-dependent renormalization coefficient.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Grant/Contract Number:
AC05-06OR23177; AC02-05CH11231; FG02-04ER41302; SC0015376; KB0301052; NQCDAWL
OSTI ID:
1371542
Alternate ID(s):
OSTI ID: 1369486; OSTI ID: 1379899
Report Number(s):
JLAB-THY-17-2419; DOE/OR/23177-4075; arXiv:1612.06963; PRVDAQ
Journal Information:
Physical Review D, Vol. 96, Issue 1; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

References (46)

Scalar densities and baryon mass differences in lattice QCD with Wilson fermions journal January 1987
On the extraction of zero momentum form factors on the lattice journal December 2012
Effective Field Theory for Heavy Weakly Interacting Massive Particles Scattering with Nucleons journal May 2014
Modification of electromagnetic structure functions for the γ Z -box diagram journal July 2013
Light baryon masses with dynamical twisted mass fermions journal July 2008
Scalar strange content of the nucleon from lattice QCD journal June 2013
Constrained curve fitting journal March 2002
Octet baryon masses and sigma terms from an SU(3) chiral extrapolation journal January 2010
On the computation of hadron-to-hadron transition matrix elements in lattice QCD journal January 2012
Nucleon sigma term and strange quark content from lattice QCD with exact chiral symmetry journal September 2008
Clebsch-Gordan construction of lattice interpolated fields for excited baryons journal October 2005
Lattice QCD ensembles with four flavors of highly improved staggered quarks journal March 2013
Intrinsic strangeness and charm of the nucleon using improved staggered fermions journal September 2013
Solving lattice QCD systems of equations using mixed precision solvers on GPUs journal September 2010
Light hadron spectroscopy using domain wall valence quarks on an asqtad sea journal March 2009
Forces in Molecules journal August 1939
Disconnected contributions to the spin of the nucleon journal December 2015
First evaluation of in lattice QCD in the quenched approximation journal August 1982
Axial, scalar, and tensor charges of the nucleon from 2 + 1 + 1 -flavor Lattice QCD journal September 2016
Electromagnetic and spin polarizabilities in lattice QCD journal June 2006
Octet baryon masses in next-to-next-to-next-to-leading order covariant baryon chiral perturbation theory journal December 2012
Sigma term and strangeness content of octet baryons journal January 2012
Neutron electric polarizability from unquenched lattice QCD using the background field approach journal December 2007
Erratum: Sigma term and strangeness content of octet baryons [Phys. Rev. D 85 , 014509 (2012)] journal February 2016
Lattice Quantum-Chromodynamics Calculation of Some Baryon Magnetic Moments journal October 1982
Feynman-Hellmann approach to the spin structure of hadrons journal July 2014
Lattice Computation of the Nucleon Scalar Quark Contents at the Physical Point journal April 2016
B ( s ) 0 -mixing matrix elements from lattice QCD for the Standard Model and beyond journal June 2016
Nucleon mass, sigma term, and lattice QCD journal February 2004
Precision lattice QCD computation of the B B π coupling journal January 2015
A stochastic method for computing hadronic matrix elements journal January 2014
The proton and neutron magnetic moments in lattice QCD journal October 1982
Extracting electric polarizabilities from lattice QCD journal May 2009
Group-theoretical construction of extended baryon operators in lattice QCD journal November 2005
Sigma terms from an SU(3) chiral extrapolation journal April 2013
Extracting nucleon magnetic moments and electric polarizabilities from lattice QCD in background electric fields journal March 2010
Two-photon exchange correction to 2 S 2 P splitting in muonic He 3 ions journal January 2017
Highly improved staggered quarks on the lattice with applications to charm physics journal March 2007
Nucleon mass and sigma term from lattice QCD with two light fermion flavors journal January 2013
Isovector charges of the nucleon from 2 + 1 -flavor QCD with clover fermions journal April 2017
First Determination of the Weak Charge of the Proton journal October 2013
Hyperon sigma terms for 2 + 1 quark flavors journal February 2012
Nucleon strange quark content from N f = 2 + 1 lattice QCD with exact chiral symmetry journal February 2013
Strangeness in the baryon ground states journal October 2012
Nucleon mass: From lattice QCD to the chiral limit journal June 2006
The Chroma Software System for Lattice QCD journal March 2005

Cited By (11)

A per-cent-level determination of the nucleon axial coupling from quantum chromodynamics journal May 2018
Nucleon axial radius and muonic hydrogen—a new analysis and review journal July 2018
FLAG Review 2019 text January 2019
FLAG Review 2019: Flavour Lattice Averaging Group (FLAG) journal February 2020
Electromagnetic form factors at large momenta from lattice QCD text January 2017
FLAG Review 2019 text January 2020
Electromagnetic form factors at large momenta from lattice QCD text January 2017
FLAG Review 2019 text January 2020
Iso-vector axial form factors of the nucleon in two-flavour lattice QCD text January 2017
Nucleon Axial Radius and Muonic Hydrogen - A New Analysis and Review text January 2017
A percent-level determination of the nucleon axial coupling from Quantum Chromodynamics text January 2018

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