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Topology (and axion's properties) from lattice QCD with a dynamical charm.

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Title: Topology (and axion's properties) from lattice QCD with a dynamical charm.
Authors: Burger, Florian1, Ilgenfritz, Ernst-Michael2, Lombardo, Maria Paola3, Müller-Preussker, Michael1, Trunin, Anton2
Source: Nuclear Physics A. Nov2017, Vol. 967, p880-883. 4p.
Subjects: Lattice dynamics, Dynamical systems, Quantum chromodynamics, Quantum electrodynamics, Nuclear physics
Abstract: We present results on QCD with four dynamical flavors in the temperature range 0.9 ≲ T / T c ≲ 2 . We have performed lattice simulations with Wilson fermions at maximal twist and measured the topological charge with gluonic and fermionic methods. The topological charge distribution is studied by means of its cumulants, which encode relevant properties of the QCD axion, a plausible Dark Matter candidate. The topological susceptibility measured with the fermionic method exhibits a power-law decay for T / T c ≳ 2 , with an exponent close to the one predicted by the Dilute Instanton Gas Approximation (DIGA). Close to T c the temperature dependent effective exponent approaches the DIGA result from above, in agreement with recent analytic calculations. These results constrain the axion window, once an assumption on the fraction of axions contributing to Dark Matter is made. [ABSTRACT FROM AUTHOR]
Copyright of Nuclear Physics A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
An: 125357575
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  Data: Topology (and axion's properties) from lattice QCD with a dynamical charm.
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  Data: <searchLink fieldCode="JN" term="%22Nuclear+Physics+A%22">Nuclear Physics A</searchLink>. Nov2017, Vol. 967, p880-883. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Lattice+dynamics%22">Lattice dynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Dynamical+systems%22">Dynamical systems</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+chromodynamics%22">Quantum chromodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+electrodynamics%22">Quantum electrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+physics%22">Nuclear physics</searchLink>
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  Label: Abstract
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  Data: We present results on QCD with four dynamical flavors in the temperature range 0.9 ≲ T / T c ≲ 2 . We have performed lattice simulations with Wilson fermions at maximal twist and measured the topological charge with gluonic and fermionic methods. The topological charge distribution is studied by means of its cumulants, which encode relevant properties of the QCD axion, a plausible Dark Matter candidate. The topological susceptibility measured with the fermionic method exhibits a power-law decay for T / T c ≳ 2 , with an exponent close to the one predicted by the Dilute Instanton Gas Approximation (DIGA). Close to T c the temperature dependent effective exponent approaches the DIGA result from above, in agreement with recent analytic calculations. These results constrain the axion window, once an assumption on the fraction of axions contributing to Dark Matter is made. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nuclear Physics A is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.nuclphysa.2017.07.006
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      – Code: eng
        Text: English
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        PageCount: 4
        StartPage: 880
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      – SubjectFull: Lattice dynamics
        Type: general
      – SubjectFull: Dynamical systems
        Type: general
      – SubjectFull: Quantum chromodynamics
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      – SubjectFull: Quantum electrodynamics
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      – SubjectFull: Nuclear physics
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      – TitleFull: Topology (and axion's properties) from lattice QCD with a dynamical charm.
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            NameFull: Burger, Florian
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            NameFull: Lombardo, Maria Paola
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            NameFull: Müller-Preussker, Michael
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            NameFull: Trunin, Anton
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            – D: 01
              M: 11
              Text: Nov2017
              Type: published
              Y: 2017
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              Value: 967
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