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Numerical Studies in Lattice QCD
Numerical Studies in Lattice QCD
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211153146
- ISBN
- 9798346378457
- DDC
- 519.5
- 서명/저자
- Numerical Studies in Lattice QCD
- 발행사항
- [Sl] : The Pennsylvania State University, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 104 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 86-05, Section: B.
- 주기사항
- Advisor: Fodor, Zoltan.
- 학위논문주기
- Thesis (Ph.D.)--The Pennsylvania State University, 2024.
- 초록/해제
- 요약Lattice field theory is a non-perturbative method of solving the equations of gauge theories in particle physics. It is a well-established method of exploring the phase diagram of quantum chromodynamics (QCD), the theory of the strong interaction. Numerical studies of lattice QCD on the computer are capable of yielding exact, non-perturbative results. However, regions of the QCD phase diagram pose great challenges for lattice QCD because of the difficulties which arise for numerical calculations. We present numerical studies directed towards eventually simulating in more difficult regions of the phase diagram.In the first study, we demonstrate the effectiveness of a generalization of the parallel tempering algorithm, originally developed for spin systems by Marinari and Parisi \\cite{Marinari:1992qd}, in mitigating the issue of supercritical slowing-down in lattice simulations in the vicinity of first-order phase transitions. We do so by performing large-scale simulations to characterize the phase transition of pure SU(3) Yang-Mills theory, or quenched QCD. We compare the autocorrelation times of parallel tempering simulations with those of brute force calculations. We compute the transition temperature to be _0T_c = 0.25384(25)$---which is the first per-mill accurate result in lattice QCD---and by a finite-volume scaling, we show that the transition is first-order.In the second study, we look further into the phase transition in pure SU(3) by studying its topological features. We consider the behavior of the kurtosis of the topological charge across the deconfinement transition, which is a quantity useful in determining the onset of the dilute instanton gas picture in the deconfined phase.In the final study, we investigate the renormalization of so-called minimally doubled fermions. The Karsten-Wilczek action is a implementation of minimally doubled fermions on the lattice. It explicitly breaks hypercubic symmetry and introduces three counterterms with respective bare parameters. We present a tuning of the bare parameters of the Karsten-Wilczek action on stored gauge configurations that were computed with the staggered fermion action at the physical point. We also study the magnitude of the taste-splitting of several fermion channels as a function of the lattice spacing.
- 일반주제명
- Kurtosis
- 일반주제명
- Quantum physics
- 일반주제명
- Quarks
- 일반주제명
- Fourier transforms
- 일반주제명
- Neutron stars
- 일반주제명
- Symmetry
- 일반주제명
- Supercomputers
- 일반주제명
- Lattice theory
- 일반주제명
- Spacetime
- 일반주제명
- Anisotropy
- 일반주제명
- Quantum field theory
- 일반주제명
- 20th century
- 일반주제명
- Particle physics
- 일반주제명
- Asymmetry
- 일반주제명
- Astronomy
- 일반주제명
- Atomic physics
- 일반주제명
- Mathematics
- 일반주제명
- Theoretical physics
- 기본자료저록
- Dissertations Abstracts International. 86-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211153146
■006m o d
■007cr#unu||||||||
■020 ▼a9798346378457
■035 ▼a(MiAaPQ)AAI31631221
■035 ▼a(MiAaPQ)PennState23815dag5611
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a519.5
■1001 ▼aGodzieba, Daniel A.
■24510▼aNumerical Studies in Lattice QCD
■260 ▼a[Sl]▼bThe Pennsylvania State University▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a104 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 86-05, Section: B.
■500 ▼aAdvisor: Fodor, Zoltan.
■5021 ▼aThesis (Ph.D.)--The Pennsylvania State University, 2024.
■520 ▼aLattice field theory is a non-perturbative method of solving the equations of gauge theories in particle physics. It is a well-established method of exploring the phase diagram of quantum chromodynamics (QCD), the theory of the strong interaction. Numerical studies of lattice QCD on the computer are capable of yielding exact, non-perturbative results. However, regions of the QCD phase diagram pose great challenges for lattice QCD because of the difficulties which arise for numerical calculations. We present numerical studies directed towards eventually simulating in more difficult regions of the phase diagram.In the first study, we demonstrate the effectiveness of a generalization of the parallel tempering algorithm, originally developed for spin systems by Marinari and Parisi \\cite{Marinari:1992qd}, in mitigating the issue of supercritical slowing-down in lattice simulations in the vicinity of first-order phase transitions. We do so by performing large-scale simulations to characterize the phase transition of pure SU(3) Yang-Mills theory, or quenched QCD. We compare the autocorrelation times of parallel tempering simulations with those of brute force calculations. We compute the transition temperature to be ▼w_0T_c = 0.25384(25)$---which is the first per-mill accurate result in lattice QCD---and by a finite-volume scaling, we show that the transition is first-order.In the second study, we look further into the phase transition in pure SU(3) by studying its topological features. We consider the behavior of the kurtosis of the topological charge across the deconfinement transition, which is a quantity useful in determining the onset of the dilute instanton gas picture in the deconfined phase.In the final study, we investigate the renormalization of so-called minimally doubled fermions. The Karsten-Wilczek action is a implementation of minimally doubled fermions on the lattice. It explicitly breaks hypercubic symmetry and introduces three counterterms with respective bare parameters. We present a tuning of the bare parameters of the Karsten-Wilczek action on stored gauge configurations that were computed with the staggered fermion action at the physical point. We also study the magnitude of the taste-splitting of several fermion channels as a function of the lattice spacing.
■590 ▼aSchool code: 0176.
■650 4▼aKurtosis
■650 4▼aQuantum physics
■650 4▼aQuarks
■650 4▼aFourier transforms
■650 4▼aNeutron stars
■650 4▼aSymmetry
■650 4▼aSupercomputers
■650 4▼aLattice theory
■650 4▼aSpacetime
■650 4▼aAnisotropy
■650 4▼aQuantum field theory
■650 4▼a20th century
■650 4▼aAtoms & subatomic particles
■650 4▼aParticle physics
■650 4▼aAsymmetry
■650 4▼aAstronomy
■650 4▼aAtomic physics
■650 4▼aMathematics
■650 4▼aTheoretical physics
■690 ▼a0599
■690 ▼a0798
■690 ▼a0606
■690 ▼a0748
■690 ▼a0405
■690 ▼a0753
■71020▼aThe Pennsylvania State University.
■7730 ▼tDissertations Abstracts International▼g86-05B.
■790 ▼a0176
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17165189▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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