Hadron mass calculations using susskind fermions at β = 5.7 and 6.0

Bowler, K.C.; Chalmers, C.B.; Kenway, R.D.; Pawley, G. S.; Roweth, Duncan

doi:10.1016/0550-3213(87)90037-x

Cited by 45 publications

(18 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides these main channels, we study the masses of mesons interpolated from local operators, a non-NG channel (γ 5 γ 4 ⊗ ξ 5 ξ 4 ) denoted by "SC", and a vector meson (γ i ⊗ ξ i ) denoted by "VT" in Ref. [45], by which we will show that the flavor-symmetry breaking is small in HISQ. These masses are obtained from corner wall source correlator.…”

Section: B Calculation Of Observablesmentioning

confidence: 99%

“…We measure M ρ from the staggered vector meson operator (γ i γ 4 ⊗ξ i ξ 4 ), denoted by PV in Ref. [45]. The asymptotic form of the PV correlator at large t may be written as…”

Section: B Calculation Of Observablesmentioning

confidence: 99%

“…The corresponding spin-flavor structure is (γ 5 ⊗ ξ 5 ), denoted by "PS" in Ref. [45]. The random wall source is used for the quark operator for the bilinear, which becomes a noisy estimator of the point bilinear operator with spatial sum at a given time slice t 0 .…”

Section: B Calculation Of Observablesmentioning

confidence: 99%

See 2 more Smart Citations

Walking signals inNf=8QCD on the lattice

et al. 2013

View full text Add to dashboard Cite

We investigate chiral and conformal properties of the lattice QCD with eight flavors (N f = 8) through meson spectrum using the Highly Improved Staggered Quark (HISQ) action. We also compare our results with those of N f = 12 and N f = 4 which we study on the same systematics. We find that the decay constant Fπ of the pseudoscalar meson "pion" π is non-zero, with its mass Mπ consistent with zero, both in the chiral limit extrapolation of the chiral perturbation theory (ChPT). We also measure other quantities which we find are in accord with the π data results: The ρ meson mass is consistent with non-zero in the chiral limit, and so is the chiral condensate, with its value neatly coinciding with that from the Gell-Mann-Oakes-Renner relation in the chiral limit. Thus our data for the N f = 8 QCD are consistent with the spontaneously broken chiral symmetry. Remarkably enough, while the N f = 8 data near the chiral limit are well described by the ChPT, those for the relatively large fermion bare mass m f away from the chiral limit actually exhibit a finite-size hyperscaling relation, suggesting a large anomalous dimension γm ∼ 1. This implies that there exists a remnant of the infrared conformality, and suggests that a typical technicolor ("onefamily model") as modeled by the N f = 8 QCD can be a walking technicolor theory having an approximate scale invariance with large anomalous dimension γm ∼ 1.2

show abstract

Section: B Calculation Of Observablesmentioning

confidence: 99%

“…We measure M ρ from the staggered vector meson operator (γ i γ 4 ⊗ξ i ξ 4 ), denoted by PV in Ref. [45]. The asymptotic form of the PV correlator at large t may be written as…”

Section: B Calculation Of Observablesmentioning

confidence: 99%

See 1 more Smart Citation

Walking signals inNf=8QCD on the lattice

et al. 2013

View full text Add to dashboard Cite

show abstract

“…(See Ref. [8] for a discussion of the meson operators.) The di erence is attributable to the slopes of the masses as functions of 6=g 2 and am q .…”

Section: The -Functionmentioning

confidence: 99%

β function and equation of state for QCD with two flavors of quarks

et al. 1995

View full text Add to dashboard Cite

We measure the pressure and energy density of two avor QCD in a wide range of quark masses and temperatures. The pressure is obtained from an integral over the average plaquette or . We measure the QCD function, including the anomalous dimension of the quark mass, in new Monte Carlo simulations and from results in the literature. We use it to nd the interaction measure, " 0 3p, yielding non-perturbative values for both the energy density " and the pressure p.12.38.Gc, 11.15.Ha

show abstract

“…The construction of static correlation functions uses methods familiar from mass spectrum analysis at zero temperature [4]. We use a notation common for the corresponding zero-temperature correlations: Afps, Msc, MVT, and Afpv for the meson correlations and B for the baryon correlation [5]. We measured correlations in the z direction.…”

mentioning

confidence: 99%

Hadronic correlation functions in the QCD plasma phase

et al. 1991

View full text Add to dashboard Cite

We present results for static hadronic correlation functions in the high-temperature phase of QCD with four flavors of dynamical quarks. We confirm chiral-symmetry restoration through the degeneracies of the spectrum of screening lengths. We also find that the screening lengths for the p and TV channels at rS; 1.27V are close to that in a free quark gas. PACS numbers: 12.38.Gc, 12.38.Mh Simulations of lattice QCD have shown that chiral symmetry is restored at high temperatures, as indicated by the vanishing of the chiral order parameter (##> [1].Additional evidence for the restoration of chiral symmetry can be obtained by using hadronic correlation functions, first studied by DeTar and Kogut [2]. The exponential falloff of such correlations at large spatial separations determines screening lengths, and unbroken symmetries are reflected in degeneracies of these screening lengths. Hadronic correlation functions also yield information on the real-time modes of the high-temperature phase. If the plasma phase contains hadronic modes, as argued by DeTar and Kogut [2], then the corresponding correlation functions should be screened. On the other hand, free quarks also lead to screening in the imaginary-time formulation-through the existence of a finite infrared cutoff on the Euclidean-time components of momenta. It is therefore important to determine the temperature dependence of these screening lengths and to compare them with the results of a computation with free quarks.In this Letter we present results for hadronic correlations obtained on an 8xl6 3 lattice with four flavors of dynamical quarks of mass m q a =0.01, and compare them to values obtained for a gas of free quarks, taking into account finite-size effects in the latter case. We performed measurements on configurations generated by the MT C Collaboration with the hybrid Monte Carlo algorithm (see Ref.[3] for details of the runs), using approximately twenty configurations at each /?, separated by about fifty trajectories, in order to take care of autocorrelations. At /3=5.15 (our estimate for fi c ), where two runs from different starts indicated the presence of metastabilities, we made separate analyses for the two.We restrict our analysis to spatial correlations between local hadronic operators constructed from staggered fermions. The construction of static correlation functions uses methods familiar from mass spectrum analysis at zero temperature [4]. We use a notation common for the corresponding zero-temperature correlations: Afps, Msc, MVT, and Afpv for the meson correlations and B for the baryon correlation [5]. We measured correlations in the z direction. To compensate for antiperiodicity in the imaginary-time direction r, we replaced the temporal average in B by Biz)-X cos(cooT)B(x,y,z y r),x,y,r where coo =7rT is the lowest Matsubara frequency. It is possible to test for chiral-symmetry restoration directly from the correlation functions without extracting screening masses. Following Ref.[6], we construct for this purpose the chiral projections M 0...

show abstract

Hadron mass calculations using susskind fermions at β = 5.7 and 6.0

Cited by 45 publications

References 44 publications

Walking signals inNf=8QCD on the lattice

Walking signals inNf=8QCD on the lattice

β function and equation of state for QCD with two flavors of quarks

Hadronic correlation functions in the QCD plasma phase

Contact Info

Product

Resources

About