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Statični potencial SU(3) Yang-Mills teorije na mreži
ID Maležič, Marko (Author), ID Leskovec, Luka (Mentor) More about this mentor... This link opens in a new window

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Abstract
V magistrskem delu raziščemo statični potencial med kvarki v SU(3) Yang-Mills teoriji na mreži. Razumevanje potenciala je ključno pri raziskavi nastanka vezanih stanj kvarkov in antikvarkov -- hadronov. Na mreži generiramo konfiguracije polj s hibridnim Monte Carlo algoritmom za Wilsonovo in Lüscher-Weisz diskretizacijo akcije, ter skozi različne inverzne sklopitvene konstante $\beta$ in mrežne volumne $(L, L_{t})$. Iz konfiguracij izračunamo Wilsonove zanke, ki jih analiziramo in določimo statični potencial $V(r)$ v kontinuumski limiti. Naši rezultati kažejo na linearno naraščajoč statični potencial v limiti velikih razdalj, kar je skladno s fenomenom zaprtja kvarkov. V kontinuumski limiti obe akciji reproducirata isto napetost strune, ultravijolični del potenciala pa je v rahli tenziji, kar pripišemo sistematičnim napakam pri izločanju potenciala iz podatkov. Ugotovitve pokrivajo neperturbativno dinamiko kvantne kromodinamike in predstavljajo prispevek k razumevanju strukture hadronov.

Language:Slovenian
Keywords:Statični kvarkovski potencial, Zaprtje kvarkov, Vezana stanja hadronov, SU(3) umeritvena teorija polja, Yang-Mills teorija na mreži, Kvantna kromodinamika
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FMF - Faculty of Mathematics and Physics
Year:2024
PID:20.500.12556/RUL-162008 This link opens in a new window
COBISS.SI-ID:208084483 This link opens in a new window
Publication date in RUL:18.09.2024
Views:139
Downloads:34
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Secondary language

Language:English
Title:Static potential of the SU(3) Yang-Mills theory on the lattice
Abstract:
In the thesis, we investigate the static potential between quarks in the SU(3) Yang-Mills theory on the lattice. Understanding the potential is crucial in formation of bound quark and antiquark states -- hadrons. We generate field configurations on the lattice by using the Hybrid Monte Carlo algorithm for the Wilson and Lüscher-Weisz lattice actions across different inverse coupling constants $\beta$ and lattice volumes $(L,L_{t})$. From these configurations, we calculate Wilson loops, which we analyze to determine the static potential $V(r)$ in the continuum limit. Our results demonstrate a linear rise in static potential at large distances, which is consistent with the phenomenon of confinement. In the continuum limit, both actions reproduce the same string tension, but the ultraviolet part of the potential is under slight tension, which we attribute to systematic errors in extracting the potential from the data. These findings substantiate the non-perturbative dynamics of quantum chromodynamics and contribute to the understanding of hadron structure.

Keywords:Static quark potential, Quark confinement, Hadron bound states, SU(3) gauge field theory, Yang-Mills theory on the lattice, Quantum chromodynamics

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