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Mazur, Lukas: Topological Aspects in Lattice QCD. 2021
Inhalt
List of Publications
Introduction
QCD and its Symmetries
The QCD Lagrangian and the path integral formulation
Gauge symmetry
Chiral symmetry
The axial anomaly
QCD phase diagram in the chiral limit
Topology
Compactifying spacetime
Classification of topological sectors
Instantons
Properties of the topological charge
The sphaleron rate
Lattice QCD
Discretizing QCD
Fermion doublers and the Wilson discretization
The staggered discretization
The Ginsparg-Wilson relation and the overlap Dirac operator
The discretized field strength tensor
Topological charge
The gradient flow
The ParallelGPUCode
Memory management
Indexing
Parallelizing using functor syntax
Communication techniques
SiteComm and derived classes
Lattice container
Coalesced memory access
Getting started
Status summary and benchmarks
Topological Susceptibility at Varying Light Quark Masses
Lattice setup
Extracting the topological susceptibility
Volume dependence
Mass dependence
Temperature dependence
Discretization effects
Conclusion
The Overlap Dirac Eigenvalue Spectrum
Numerical setup
Accelerating the overlap Dirac eigenvalue measurements
Analyzing the overlap eigenvalue spectrum
Quantifying `3́9`42`"̇613A``45`47`"603AUA(1) breaking in the chiral limit
Conclusion
The qq Correlation Function and the Sphaleron Rate
Numerical setup
Determining the topological charge density
Continuum and flow-time extrapolation
Interpolation
Continuum extrapolation
Flow-time extrapolation
The sphaleron rate
Conclusion
Conclusion
Appendix
Gamma matrices
Pure gauge
Bibliography
Acknowledgements