Chiral Fermions on the Lattice

Bietenholz, Wolfgang; Ayala, Alejandro; Contreras, Guillermo; Leon, Ildefonso; Podesta, Pedro

doi:10.1063/1.3622708

Cited by 4 publications

(3 citation statements)

References 42 publications

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“…QCD lattice simulations with three light flavours at pion and kaon masses smaller than 600 MeV are consid-ered. That leaves data sets from PACS-CS, LHPC, HSC, NPLQCD, QCDSF-UKQCD and ETMC [15][16][17][18][19][20]. We are aware of the recent lattice ensembles of the CLS group with 2+1 flavors based on nonperturbatively improved Wilson fermions [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

On a first order transition in QCD with up, down and strange quarks

2020

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We consider the quark-mass dependence of the baryon octet and decuplet ground state masses. It is predicted that QCD dynamics implies a first order transition when increasing the strange quark mass from its chiral limit towards its physical value. Our claim relies on a global fit to the available QCD lattice data on such baryon masses. Quantitative results based on an application of the chiral SU(3) Lagrangian at N 3 LO are discussed. We predict an anomalous sector of QCD where stable baryonic matter would be composed of Λ orΛ particles rather than nucleons and anti-nucleons.

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Section: Introductionmentioning

confidence: 99%

On a first order transition in QCD with up, down and strange quarks

2020

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“…The QCDSF collaboration [25][26][27] compared their data for the mass gap from numerical simulations of lattice QCD to (6.1) using values…”

Section: Jhep04(2016)110mentioning

confidence: 99%

Matching effective chiral Lagrangians with dimensional and lattice regularizations

Niedermayer¹,

Weisz²

2016

J. High Energ. Phys.

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Abstract:We compute the free energy in the presence of a chemical potential coupled to a conserved charge in effective O(n) scalar field theory (without explicit symmetry breaking terms) to third order for asymmetric volumes in general d-dimensions, using dimensional (DR) and lattice regularizations. This yields relations between the 4-derivative couplings appearing in the effective actions for the two regularizations, which in turn allows us to translate results, e.g. the mass gap in a finite periodic box in d = 3 + 1 dimensions, from one regularization to the other. Consistency is found with a new direct computation of the mass gap using DR. For the case n = 4, d = 4 the model is the low-energy effective theory of QCD with N f = 2 massless quarks. The results can thus be used to obtain estimates of low energy constants in the effective chiral Lagrangian from measurements of the low energy observables, including the low lying spectrum of N f = 2 QCD in the δ-regime using lattice simulations, as proposed by Peter Hasenfratz, or from the susceptibility corresponding to the chemical potential used.

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“…Recent results using Clover [5] and TM fermion actions [6] with a careful analysis of lattice systematics have been obtained showing agreement with the experimental values. The QCDSF-UKQCD [7] and PACS-CS collaborations [8] have also performed spectrum studies using Clover fermions. Recent results using staggered [9], domain wall fermions (DWF) [10], and a mixed action approach with staggered sea quarks and DW valence quarks [11] show overall consistency [12].…”

Section: Hadron Massesmentioning

confidence: 99%