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Klegrewe, Marc: Strong Coupling Lattice QCD in the Continuous Time Limit. 2020
Inhalt
Acknowledgements
Abstract
Table of Contents
Preface
Theoretical Framework
The Theory of Quantum Chromodynamics
Symmetries of QCD
Chiral Symmetry
Spontaneous Breaking of Chiral Symmetry
QCD Phase Diagram
Lattice Quantum Chromodynamics
Lattice Regularization
A Naïve discretization - Gluons
A Naïve Discretization - Fermions
Doubling Problem
Staggered Fermions
Finite Temperature and Density
Strong Coupling Limit
Dual Representation of Strong Coupling QCD
High Temperature Limit
Numerical Approaches and Statistics
Markov Chain Monte Carlo
Error Analysis
Continuous Time Limit
Definition of the Continuous Time Limit
Towards the Continuous Time Partition Function
Factorization and Grassmann constraint
Carrying out the CT limit
Baryon resummation and mesonic vertices
Vertices for Nc=3
Continous Time Partition Function
Hamiltonian Formulation
Continuous Time Worm Algorithm
Two essential concepts
Poisson Process
Emission and Absorption Sites
Algorithm Details
Worm Propagation
Measurement of Monomer Two-point Functions
Benefits of a Continuous Time Worm Algorithm
Continuous Time Crosschecks and Results
Observables in the Dual representation
Discrete Time Observables
Continuous Time Observables
Crosschecks
Results at T=0
Determination of
Pion Decay Constant
Chiral Condensate
Phase Diagram
Pressure and Energy Density in the B-T plane
Determination of Tc
Temporal Correlators
Foundation of Hadron Correlators
Zero momentum projection
Mass extraction
Staggered Meson Correlators
Staggered Phase Factors
Staggered Correlation Function
Discrete Time Mesonic Correlators
Continuous Time Meson Correlators
Pole Masses from Correlated Fits
Construct estimators
Multiple State Fits
Mass plateau
Pole Masses from Discrete Time
Pole Masses from Continuous Time
Variation of Bins
Finite Chemical Potential
Towards Transport Coefficients
Discussion
Taylor Expansion
Taylor Expanding the Pressure
Exact enumeration in two dimensions
Taylor coefficients in 3+1 dimensions
Naïve approach
Polymer resummation
Histograms in the Polymer Number
Inflection Points
Radius of Convergence
Reconstruction of the Pressure
Discussion
Conclusion and Outlook
Bibliography
List of Figures
List of Figures
List of Tables
List of Tables
Appendix
``Exact'' Continuous Time Partition Function for 2CT Lattice.
Numeric approach
Combinatorial approach
Grassmann Integration
Quantum Numbers
Miscellaneous Plots