Part I Ontology and Quantum Field Theory -- Chapter 1 Introduction -- Chapter 2 Philosophical Background -- 2.1 Atomism in the History of Philosophy -- 2.2 Philosophical Versus Scientific Atomism -- 2.3 Atomism and Reductionism -- Chapter 3 Ontology and Physics -- 3.1 Some Main Themes in Ontology -- 3.2 A Brief History of Ontology -- 3.3 The Analytical Tradition of Ontology -- 3.4 No-Go Theorems as Tools for the Ontological Practician -- 3.5 Symmetries, Heuristics and Objectivity -- Chapter 4 History and Basic Structure of QFT -- 4.1 The Early Development -- 4.2 The Emergence of Infinities -- 4.3 The Taming of Infinities -- 4.4 The Lagrangian Formulation of QFT -- 4.5 Interaction -- Chapter 5 Alternative Approaches -- 5.1 Deficiencies of the Standard Formulation of QFT -- 5.2 The Algebraic Point of View -- 5.3 Basic Ideas of AQFT -- Chapter 6 The Ontological Significance of QFTand AQFT -- 6.1 QM Versus QFT -- 6.2 AQFT and the Ideal Language Philosophy -- 6.3 QFT Versus AQFT -- 6.4 The Philosophical Interest in (A)QFT -- Part II Classical Ontologies -- Chapter 7 Classical vs. Revisionary Ontologies -- 7.1 Introduction -- 7.2 Aristotle's Theory of Substances -- 7.3 Substance Ontologies -- 7.4 Substances Under Attack -- 7.5 Substance Ontology and Quantum Physics -- 7.5.1 Incompatible Observables -- 7.5.2 Non-Vanishing Vacuum Expectation Values -- Chapter 8 Particle Interpretation of QFT -- 8.1 The Particle Concept -- 8.1.1 General Features -- 8.1.2 Wigner's Analysis of the Poincaré Group -- 8.2 Theory and Experiment in Elementary Particle Physics: Is a Particle Track a Track of a Particle? -- 8.3 Localization Problems -- 8.3.1 The Clash of Causality and Localizability -- 8.3.2 Locating the Origin of Non-Localizability: A Comparative Study -- 8.4 Further Problems for a Particle Interpretation of QFT -- 8.5 Results.

Chapter 9 Field Interpretations of QFT -- 9.1 The Field Concept -- 9.2 Fields as Basic Entities of QFT -- 9.2.1 The Role of Field Operators in QFT -- 9.2.2 Indirect Evidence for Fields -- 9.3 Fields Versus Algebras -- Part III Revisionary Ontologies -- Chapter 10 Process Ontology -- 10.1 The Strands of Process Ontology -- 10.2 Why Process Ontology in QM and QFT? -- 10.3 A Case Study: Consequences of the Ontological Hypotheses for the Interpretation of Feynman Diagrams -- 10.4 Evaluation of the Case Study -- 10.5 Remaining Problems -- Chapter 11 Trope Ontology I: The Ontological Status of Properties -- 11.1 The Problem of Universals -- 11.2 The Traditional Responses -- 11.3 A New Solution: Trope Ontology -- 11.4 An Evaluation of the Debate -- 11.5 Conclusion and Outlook -- Chapter 12 Trope Ontology II: Properties and Things -- Part IV The Trope Bundle Interpretation -- Chapter 13 Dispositional Trope Ontology -- 13.1 Introduction -- 13.2 Trope Bundles and Many-Particle Systems -- 13.2.1 'Elementary Particles' -- 13.2.2 Individuality of Quantum Objects -- 13.2.3 Dispositions and Tropes -- 13.2.4 An Example -- 13.3 The Trope Bundle Interpretation of AQFT -- 13.3.1 AQFT as a Model of Trope Ontology -- 13.3.2 An Algebraic Argument for the Bundle Conception -- 13.3.3 Representations and Properties/Tropes -- 13.3.4 Outlook on Potential Problems and Further Work -- 13.3.5 The Explanatory Power of the Trope Bundle Interpretation -- 13.4 Summing Up -- Part V Concluding Remarks -- Chapter 14 Physics and Philosophy -- Chapter 15 Summing Up -- 15.1 General Remarks -- 15.2 Comparison of Ontologies for QFT -- 15.2.1 Particles Versus Fields -- 15.2.2 Processes Versus Tropes -- 15.2.3 The Merits of Dispositional Trope Ontology -- Part VI Appendices -- Abbreviations and Notation -- Appendix A Special Relativity Theory: Some Notation and Required Results.

Appendix B Ontologically Oriented Survey of Quantum Mechanics -- B.1 The Hilbert Space Formalism -- B.1.1 States and Observables -- B.1.2 Probability Interpretation -- B.1.3 Dynamics -- B.2 Problems for an Ontology of QM -- B.2.1 The Problem of Individuation -- B.2.2 The Problem of Reidentifiability -- B.2.3 The Measurement Problem -- Appendix C Advanced Foundational Topics in QFT -- C.1 Gauge Invariance -- C.2 Effective Field Theories and Renormalization -- C.3 String Theory -- Appendix D Assumptions and Results of AQFT -- D.1 Assumptions of AQFT -- D.2 Representations and States -- D.3 Superselection Sectors -- Bibliography -- Physics Glossary -- Philosophy Glossary.