Dirac spectral density in Nf =2+1 QCD at T=230 MeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00601524" target="_blank" >RIV/61389005:_____/24:00601524 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevD.110.074515" target="_blank" >https://doi.org/10.1103/PhysRevD.110.074515</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.110.074515" target="_blank" >10.1103/PhysRevD.110.074515</a>
Alternative languages
Result language
angličtina
Original language name
Dirac spectral density in Nf =2+1 QCD at T=230 MeV
Original language description
We compute the renormalized Dirac spectral density in N-f = 2 + 1 QCD at physical quark masses, temperature T = 230 MeV, and system size L-s = 3.4 fm. To that end, we perform a pointwise continuum limit of the staggered density in lattice QCD with staggered quarks. We find, for the first time, that a clear infrared structure (IR peak) emerges in the density of the Dirac operator describing dynamical quarks. We also provide numerical evidence that a component of this peak, which becomes dominant in the thermodynamic limit, is due to a nontrivial accumulation of near-zero modes. Features of this structure are consistent with those previously attributed to the recently proposed IR phase of thermal QCD. Our results (i) provide the only complete first-principles evidence that these IR features exist and are physical, (ii) improve the upper bound for IR phase transition temperature T-IR so that the new window is 200 < T-IR <230 MeV, and (iii) are consistent with the nonrestoration of anomalous U-A(1) symmetry (chiral limit) below T = 230 MeV.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D
ISSN
2470-0010
e-ISSN
2470-0029
Volume of the periodical
110
Issue of the periodical within the volume
7
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
074515
UT code for WoS article
001351028200001
EID of the result in the Scopus database
2-s2.0-85208017512