Critical endpoint of the finite temperature phase transition for three flavor QCD

Jin, Xiao-Yong; Kuramashi, Y.; Nakamura, Y.; Takeda, Shinji; Ukawa, A.

doi:10.1103/physrevd.91.014508

Cited by 53 publications

(74 citation statements)

References 29 publications

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“…The general trend is: the more one approaches the continuum limit, by decreasing the lattice spacing or by improving the action, the softer the transition, and the lighter the critical "pion" is. The most remarkable case is that of [10]: using a stout-improved action with staggered fermions on an N t = 4 lattice, no sign of a first-order transition was found, [8] and non-perturbatively improved Wilson fermions [5]. The N t = 4 and 6 Wilson fermion data would mistakenly suggest small lattice artifacts.…”

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confidence: 99%

“…In contrast, with Wilson fermions Ref. [5] finds a critical "pion" mass of about 300 MeV after extrapolating from N t = 6 and 8.…”

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confidence: 99%

“…N t 8. However, one observes (i) large cutoff effects (∼ 30%) for N t = 4, 6, 8 [5], and (ii) enormous discrepancies (a factor of ∼ four!) between staggered and Wilson fermions at these values of N t .…”

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confidence: 99%

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Continuum limit and universality of the Columbia plot

Forcrand¹,

D’Elia²

2017

Proceedings of 34th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2016)

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Results on the thermal transition of QCD with 3 degenerate flavors, in the lower-left corner of the Columbia plot, are puzzling. The transition is expected to be first-order for massless quarks, and to remain so for a range of quark masses until it turns second-order at a critical quark mass. But this critical quark mass and resulting "pion" mass disagree violently between Wilson and staggered fermions at finite lattice spacing, and decrease sharply with the lattice spacing, for staggered fermions at least. To clarify this puzzle and eliminate potential systematic effects from rooting, we study the 4-flavor theory with staggered fermions, on lattices with 4 to 10 timeslices. Our results are qualitatively similar to the 3-flavor case, so that rooting is not an issue. However, dramatic cutoff effects are visible, even on our finest lattices. Universality implies that cutoff effects for Wilson fermions are even more dramatic. In order to obtain a first-order thermal transition in the continuum theory, extremely light quarks are needed. 34th annual International Symposium on Lattice Field Theory

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confidence: 99%

“…In contrast, with Wilson fermions Ref. [5] finds a critical "pion" mass of about 300 MeV after extrapolating from N t = 6 and 8.…”

mentioning

confidence: 99%

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Continuum limit and universality of the Columbia plot

Forcrand¹,

D’Elia²

2017

Proceedings of 34th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2016)

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“…It was first published at Lattice 2010 [1] and has been used by several groups: the QCDSF-UKQCD collaboration [2][3][4][5][6][7], CSSM [6][7][8][9], Japanese finite density [10,11] and finite temperature [12] projects, and the RQCD collaboration [13].…”

Section: Introductionmentioning

confidence: 99%

An update on the BQCD Hybrid Monte Carlo program

2018

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Abstract. We present an update of BQCD, our Hybrid Monte Carlo program for simulating lattice QCD. BQCD is one of the main production codes of the QCDSF collaboration and is used by CSSM and in some Japanese finite temperature and finite density projects. Since the first publication of the code at Lattice 2010 the program has been extended in various ways. New features of the code include: dynamical QED, action modification in order to compute matrix elements by using Feynman-Hellman theory, more trace measurements (like Tr(D −n ) for κ, c SW and chemical potential reweighting), a more flexible integration scheme, polynomial filtering, term-splitting for RHMC, and a portable implementation of performance critical parts employing SIMD.

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“…[8] reported a relatively heavy critical mass. Our recent study [9], while confirming a large value for coarse lattice spacings, suggested that the critical mass appears to be smaller for finer lattice spacings. This implies that removal of scaling violation is crucial for Wilson-type fermion action as well.…”

Section: Introductionmentioning

confidence: 90%

Update on $N_f = 3$ finite temperature QCD phase structure with Wilson-Clover fermions

Takeda¹,

Jin²,

Kuramashi³

et al. 2017

Proceedings of 34th Annual International Symposium on Lattice Field Theory — PoS(LATTICE2016)

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We present an update of the finite temperature phase structure analysis for three flavor QCD. In the study the Iwasaki gauge action and non-perturvatively O(a) improved Wilson-Clover fermion action are employed. We discuss finite size scaling analysis including mixings of magnetizationlike and energy-like observables. Preliminary results are shown of the continuum limit of the critical point using newly generated data at N t = 8, 10, including estimates of the critical pseudoscalar meson mass and critical temperature. 34th annual International Symposium on Lattice Field Theory

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Critical endpoint of the finite temperature phase transition for three flavor QCD

Cited by 53 publications

References 29 publications

Continuum limit and universality of the Columbia plot

Continuum limit and universality of the Columbia plot

An update on the BQCD Hybrid Monte Carlo program

Update on $N_f = 3$ finite temperature QCD phase structure with Wilson-Clover fermions

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