Universal scaling properties of QCD close to the chiral limit

Kaczmarek O, Karsch F, Lahiri A, Schmidt-Sonntag C (2020)
Presented at the Criticality in QCD and the Hadron Resonance Gas, Online-Konferenz, Polen.

Konferenzbeitrag | Englisch
 
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Abstract / Bemerkung
We present a lattice QCD based determination of the chiral phase transition temperature in QCD with two massless (up and down) and one strange quark having its physical mass. We propose and calculate two novel estimators for the chiral transition temperature for several values of the light quark masses, corresponding to Goldstone pion masses in the range of 58 MeV≲mπ≲163 MeV58~{\rm MeV}\lesssim m_\pi\lesssim 163~{\rm MeV}58 MeV≲mπ​≲163 MeV. The chiral phase transition temperature is determined by extrapolating to vanishing pion mass using universal scaling relations. After thermodynamic, continuum and chiral extrapolations we find the chiral phase transition temperature Tc0=132−6+3T_c^0=132^{+3}_{-6}Tc0​=132−6+3​ MeV. We also show some preliminary calculations that use the conventional estimator for the pseudo-critical temperature and compare with the new estimators for Tc0T_c^0Tc0​. Furthermore, we show results for the ratio of the chiral order parameter and its susceptibility and argue that this ratio can be used to differentiate between O(N)O(N)O(N) and Z2Z_2Z2​ universality classes in a non-parametric manner.
Erscheinungsjahr
2020
Konferenz
Criticality in QCD and the Hadron Resonance Gas
Konferenzort
Online-Konferenz, Polen
Konferenzdatum
2020-07-29 – 2020-07-31
Page URI
https://pub.uni-bielefeld.de/record/2949907

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Kaczmarek O, Karsch F, Lahiri A, Schmidt-Sonntag C. Universal scaling properties of QCD close to the chiral limit. Presented at the Criticality in QCD and the Hadron Resonance Gas, Online-Konferenz, Polen.
Kaczmarek, O., Karsch, F., Lahiri, A., & Schmidt-Sonntag, C. (2020). Universal scaling properties of QCD close to the chiral limit. Presented at the Criticality in QCD and the Hadron Resonance Gas, Online-Konferenz, Polen.
Kaczmarek, O., Karsch, F., Lahiri, A., and Schmidt-Sonntag, C. (2020).“Universal scaling properties of QCD close to the chiral limit”. Presented at the Criticality in QCD and the Hadron Resonance Gas, Online-Konferenz, Polen.
Kaczmarek, O., et al., 2020. Universal scaling properties of QCD close to the chiral limit. Presented at the Criticality in QCD and the Hadron Resonance Gas, Online-Konferenz, Polen.
O. Kaczmarek, et al., “Universal scaling properties of QCD close to the chiral limit”, Presented at the Criticality in QCD and the Hadron Resonance Gas, Online-Konferenz, Polen, 2020.
Kaczmarek, O., Karsch, F., Lahiri, A., Schmidt-Sonntag, C.: Universal scaling properties of QCD close to the chiral limit. Presented at the Criticality in QCD and the Hadron Resonance Gas, Online-Konferenz, Polen (2020).
Kaczmarek, Olaf, Karsch, Frithjof, Lahiri, Anirban, and Schmidt-Sonntag, Christian. “Universal scaling properties of QCD close to the chiral limit”. Presented at the Criticality in QCD and the Hadron Resonance Gas, Online-Konferenz, Polen, 2020.

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arXiv: 2010.15593

Inspire: 1826764

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