Separation of infrared and bulk in thermal QCD
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00603445" target="_blank" >RIV/61389005:_____/24:00603445 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/JHEP12(2024)101" target="_blank" >https://doi.org/10.1007/JHEP12(2024)101</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP12(2024)101" target="_blank" >10.1007/JHEP12(2024)101</a>
Alternative languages
Result language
angličtina
Original language name
Separation of infrared and bulk in thermal QCD
Original language description
A new thermal regime of QCD, featuring decoupled scale-invariant infrared glue, has been proposed to exist both in pure-glue (Nf=0) and 'real-world' (Nf=2+1 at physical quark masses) QCD. In this IR phase, elementary degrees of freedom flood the infrared, forming a distinct component independent from the bulk. This behavior necessitates non-analyticities in the theory. In pure-glue QCD, such non-analyticities have been shown to arise via Anderson-like mobility edges in Dirac spectra (lambda IR = 0, +/-lambda A not equal 0), as manifested in the dimension function dIR(lambda). Here, we present the first evidence, based on lattice QCD calculation at a=0.105 fm, that this mechanism is also at work in real-world QCD, thus supporting the existence of the proposed IR regime in nature. An important aspect of our results is that, while at T = 234 MeV we find a dimensional jump between zero modes and lowest near-zero modes very close to unity (dIR = 3 to dIR similar or equal to 2), similar to the IR phase of pure-glue QCD, at T = 187 MeV we observe a continuous lambda-dependence. This suggests that thermal states just above the chiral crossover are non-analytically (in T) connected to thermal state at T = 234 MeV, supporting the key original proposition that the transition into the IR regime occurs at a temperature strictly above the chiral crossover.
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
10303 - Particles and field physics
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
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
1029-8479
Volume of the periodical
2024
Issue of the periodical within the volume
12
Country of publishing house
US - UNITED STATES
Number of pages
21
Pages from-to
101
UT code for WoS article
001387138900001
EID of the result in the Scopus database
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