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Numerical Studies in Lattice QCD
Numerical Studies in Lattice QCD
Detailed Information
- Material Type
- 단행본
- 0017165189
- Date and Time of Latest Transaction
- 20250211153146
- ISBN
- 9798346378457
- DDC
- 519.5
- Author
- Godzieba, Daniel A.
- Title/Author
- Numerical Studies in Lattice QCD
- Publish Info
- [Sl] : The Pennsylvania State University, 2024
- Publish Info
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- Material Info
- 104 p
- General Note
- Source: Dissertations Abstracts International, Volume: 86-05, Section: B.
- General Note
- Advisor: Fodor, Zoltan.
- 학위논문주기
- Thesis (Ph.D.)--The Pennsylvania State University, 2024.
- Abstracts/Etc
- 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.
- Subject Added Entry-Topical Term
- Kurtosis
- Subject Added Entry-Topical Term
- Quantum physics
- Subject Added Entry-Topical Term
- Quarks
- Subject Added Entry-Topical Term
- Fourier transforms
- Subject Added Entry-Topical Term
- Neutron stars
- Subject Added Entry-Topical Term
- Symmetry
- Subject Added Entry-Topical Term
- Supercomputers
- Subject Added Entry-Topical Term
- Lattice theory
- Subject Added Entry-Topical Term
- Spacetime
- Subject Added Entry-Topical Term
- Anisotropy
- Subject Added Entry-Topical Term
- Quantum field theory
- Subject Added Entry-Topical Term
- 20th century
- Subject Added Entry-Topical Term
- Atoms & subatomic particles
- Subject Added Entry-Topical Term
- Particle physics
- Subject Added Entry-Topical Term
- Asymmetry
- Subject Added Entry-Topical Term
- Astronomy
- Subject Added Entry-Topical Term
- Atomic physics
- Subject Added Entry-Topical Term
- Mathematics
- Subject Added Entry-Topical Term
- Theoretical physics
- Added Entry-Corporate Name
- The Pennsylvania State University.
- Host Item Entry
- Dissertations Abstracts International. 86-05B.
- Electronic Location and Access
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■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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