Physics & Philosophy
Theoretical Physics · Foundations of Physics · Scientific Realism

Physics & Philosophy

Foundational physics, ontology, and scientific realism.

An open academic project for theoretical physics and philosophy, focusing on quantum foundations, dark matter theory, ontology, scientific realism, and formal models.

Quantum Measurement Dark Matter Ontology Scientific Realism Formal Models Comparative Metaphysics

Mission

To examine foundational problems through formal theory and philosophical analysis.

Physics & Philosophy is an open academic project devoted to foundational problems in theoretical physics, ontology, and scientific realism. It approaches these problems through rigorous scientific reasoning, formal theory, mathematical modeling, historical analysis, and critical philosophical interpretation.

The project addresses philosophical questions sharpened by modern physics, especially by the Copenhagen interpretation, the measurement problem, and the continuing debate over realism.

It welcomes contributions and critical discussion from theoretical physicists, philosophers of science, independent scholars, and academic associations. Its aim is to support disciplined academic exchange through arguments, models, references, simulations, and theoretical proposals.

Foundational Physics

Quantum measurement, interpretations of quantum mechanics, dark matter theory, and the conceptual structure of modern physics.

Ontology and Realism

Scientific realism, structural realism, ontology, metaphysical method, and the status of theoretical entities.

Formal Models and Scholarly Exchange

Mathematical models, simulation code, annotated literature, technical notes, and academic discussion among researchers, philosophers of science, and independent scholars.

Quantum Measurement and Interpretations

This section surveys the measurement problem, the status of the wave function, the emergence of classicality, and major interpretive frameworks in quantum theory.

Core problem. The measurement problem arises from the tension between unitary Schrödinger evolution, definite experimental outcomes, and the apparent classical behavior of measuring devices.
Interpretation Central Idea Representative Literature
Copenhagen / Orthodox Views Measurement is treated as a primitive or classical intervention; the formalism predicts outcomes without requiring a fully realist account of the wave function. Bohr; Heisenberg; von Neumann
Many-Worlds / Everettian Quantum Mechanics The universal wave function evolves unitarily; apparent collapse is replaced by branching structure and relative states. Everett 1957; DeWitt; Wallace
de Broglie–Bohm Theory Particles have definite positions guided by the wave function; measurement outcomes reflect hidden-variable dynamics. de Broglie; Bohm 1952; Bell
Objective Collapse Models Collapse is a real physical process modifying standard unitary dynamics. GRW; Pearle; Ghirardi, Rimini, Weber
Decoherence-Based Accounts Environmental entanglement suppresses interference between macroscopic alternatives, explaining effective classicality. Zeh; Zurek; Joos; Schlosshauer
Consistent Histories Quantum systems are described by decoherent sets of histories rather than single measurement events. Griffiths; Omnès; Gell-Mann and Hartle
Relational Quantum Mechanics Quantum states are relative to physical systems; properties are not absolute but relational. Rovelli
QBism The quantum state represents an agent’s personal degrees of belief about future experiences. Fuchs; Schack; Mermin
Modal Interpretations Quantum systems possess definite-valued properties selected by the structure of the state and dynamics. van Fraassen; Dieks; Vermaas
Transactional Interpretation Quantum processes involve advanced and retarded waves forming transactions between emitters and absorbers. Cramer; Kastner
Information-Theoretic Approaches Quantum theory is reconstructed from constraints on information, probability, and communication. Wheeler; Zeilinger; Clifton, Bub, Halvorson

Key Questions

collapse unitarity definite outcomes decoherence Born rule macroscopicity observer-system relation

Dark Matter: Theory and Observation

This section summarizes the empirical motivations for dark matter, the major candidate classes, and the observational and experimental programs used to constrain them.

Observational Evidence

  • Galaxy rotation curves
  • Galaxy cluster dynamics
  • Gravitational lensing
  • Cosmic microwave background anisotropies
  • Large-scale structure formation
  • Bullet Cluster and cluster merger systems

Candidate Frameworks

  • Cold dark matter and ΛCDM
  • Weakly interacting massive particles
  • Axions and axion-like particles
  • Sterile neutrinos
  • Self-interacting dark matter
  • Fuzzy or ultralight dark matter
  • Primordial black holes
  • Modified gravity and MOND-like alternatives
Program Purpose Examples
Direct Detection Search for scattering between dark matter particles and detector nuclei or electrons. XENON, LUX-ZEPLIN, PandaX, SuperCDMS
Indirect Detection Search for annihilation or decay products such as gamma rays, neutrinos, or cosmic rays. Fermi-LAT, AMS-02, H.E.S.S., IceCube
Collider Searches Look for missing energy or mediator signatures in high-energy collisions. LHC, ATLAS, CMS
Astrophysical Constraints Use structure formation, lensing, dwarf galaxies, and cluster dynamics to constrain models. CMB, weak lensing, Lyman-alpha forest, galaxy surveys

Ontology and Realism

Ontology concerns what exists, what kinds of entities physical theories commit us to, and how theoretical structure should be interpreted. Realism concerns whether successful theories approximately describe a mind-independent world.

Scientific Realism

The view that mature, successful scientific theories provide approximately true descriptions of unobservable entities and structures.

Structural Realism

The view that science primarily captures relational or mathematical structure rather than the intrinsic nature of objects.

Instrumentalism

The view that theories are tools for prediction and organization, not necessarily descriptions of underlying reality.

Entity Realism

The view that experimental manipulation can justify belief in certain entities even when broader theoretical frameworks remain provisional.

Ontic Structural Realism

The stronger view that structure is not merely epistemic but ontologically primary.

Process Ontology

The view that processes, events, relations, or becoming are more fundamental than enduring substances.

Criteria for Ontological Assessment

Criterion Question
Explanatory Power Does the ontology explain why the formalism works, rather than merely restating it?
Empirical Adequacy Is the ontology compatible with known observations and experimental constraints?
Formal Coherence Can the ontology be expressed without contradiction in a stable formal framework?
Parsimony Does it avoid unnecessary entities, mechanisms, or metaphysical excess?
Continuity with Physics Does it respect the mathematical structure and empirical discipline of physical theory?
Interpretive Fruitfulness Does it generate new distinctions, predictions, models, or research questions?

Models, Code, and Reproducible Results

This section will host simulation code, notebooks, parameter studies, and figures for quantum measurement models and dark matter models.

Quantum Measurement Models

Planned materials include unitary system-apparatus-environment simulations, decoherence models, pointer-state dynamics, Born-rule tests, and comparisons across interpretive assumptions. 

repositories/
  quantum-measurement/
    notebooks/
    src/
    figures/
    results/
    README.md

Dark Matter Models

Planned materials include rotation-curve fitting, halo profiles, modified-gravity comparisons, cosmological parameter notebooks, and candidate-specific constraints. 

repositories/
  dark-matter/
    halo-models/
    observations/
    simulations/
    figures/
    README.md
Code should be released with clear versioning, input data descriptions, reproducibility instructions, and explicit distinction between established models and speculative models.

Original Contributions

The platform also presents original work. These proposals are framed as research programmes and theoretical contributions, to be developed through technical manuscripts, formal arguments, simulations, and peer review.

Unitary Quantum Measurement Theory

A proposed framework in which quantum measurement is treated within a fully unitary dynamical structure, aiming to account for apparent outcome definiteness without introducing a fundamental collapse postulate.

Status: manuscript / technical notes in preparation.

Manifestational Ontology

A philosophical framework in which entities, states, or structures are analyzed through conditions of manifestation, relational presentation, and ontological dependence.

Status: conceptual framework / essay series in preparation.

Dark Matter Theory

A theoretical proposal addressing the nature, phenomenology, or effective behavior of dark matter, to be compared with astrophysical observations and existing candidate frameworks.

Status: model development / simulation programme.

Classical Reality Self-Consistency Theory

A proposed account of how classical reality may arise as a self-consistent structure from underlying physical, observational, or manifestational constraints.

Status: theoretical framework / formalization in progress.

Suggested wording for publication pages: “The following works are original theoretical proposals. They are presented for scholarly evaluation and will be revised in response to technical criticism, peer review, and further formal development.”

Metaphysics and Comparative Ontology

This section maps major metaphysical traditions relevant to ontology, causation, substance, process, dependence, mind, and reality. The aim is comparative and analytic, not devotional or doctrinal.

Tradition / View Central Concern Relevance
Substance Ontology What are enduring entities or substances? Useful for comparing classical objects, fields, particles, and metaphysical persistence.
Process Metaphysics Are processes, events, or becoming more fundamental than substances? Relevant to spacetime, quantum events, thermodynamics, and relational theories.
Structuralism Is structure more fundamental than objects? Relevant to mathematical physics, symmetry, field theory, and structural realism.
Dispositionalism Are powers, tendencies, or capacities fundamental? Relevant to laws of nature, causation, and modal structure.
Humeanism Are laws summaries of regularities rather than governing necessities? Relevant to the metaphysics of laws and probability.
Grounding and Dependence What explains the existence or status of one thing in terms of another? Relevant to emergence, reduction, and measurement outcomes.
Madhyamaka Emptiness, dependent origination, and the critique of intrinsic nature. Relevant to relational ontology, anti-essentialism, and dependence structures.
Yogācāra Consciousness, representation, and the structure of experience. Relevant to philosophy of mind, observation, and appearance-reality distinctions.
Vedānta Reality, self, consciousness, and ultimate ground. Relevant to comparative metaphysics and theories of mind and being.
Nyāya-Vaiśeṣika Categories, substances, qualities, universals, and inference. Relevant to analytic ontology, categories, and realism.
Sāṃkhya Dual principles, manifestation, causation, and evolution of categories. Relevant to comparative accounts of manifestation and ontological structure.

Selected Bibliography

A preliminary bibliography for foundational orientation. Full annotated bibliographies will be developed for each topic.

Quantum Foundations

  1. von Neumann, J. Mathematical Foundations of Quantum Mechanics.
  2. Everett, H. “Relative State” Formulation of Quantum Mechanics, 1957.
  3. Bohm, D. A Suggested Interpretation of the Quantum Theory in Terms of Hidden Variables, 1952.
  4. Bell, J. S. Speakable and Unspeakable in Quantum Mechanics.
  5. Ghirardi, G. C., Rimini, A., and Weber, T. Unified Dynamics for Microscopic and Macroscopic Systems, 1986.
  6. Zurek, W. H. Decoherence, Einselection, and the Quantum Origins of the Classical.
  7. Schlosshauer, M. Decoherence and the Quantum-to-Classical Transition.
  8. Rovelli, C. Relational Quantum Mechanics.
  9. Fuchs, C. A., Mermin, N. D., and Schack, R. An Introduction to QBism.

Dark Matter and Cosmology

  1. Zwicky, F. On the Masses of Nebulae and of Clusters of Nebulae.
  2. Rubin, V. C. and Ford, W. K. Rotation of the Andromeda Nebula.
  3. Jungman, G., Kamionkowski, M., and Griest, K. Supersymmetric Dark Matter.
  4. Bertone, G., Hooper, D., and Silk, J. Particle Dark Matter: Evidence, Candidates and Constraints.
  5. Planck Collaboration. Cosmological Parameters.
  6. Clowe, D. et al. A Direct Empirical Proof of the Existence of Dark Matter.
  7. Milgrom, M. A Modification of the Newtonian Dynamics as a Possible Alternative to the Hidden Mass Hypothesis.
  8. Hui, L. et al. Ultralight Scalars as Cosmological Dark Matter.

Ontology and Realism

  1. Putnam, H. Mathematics, Matter and Method.
  2. van Fraassen, B. C. The Scientific Image.
  3. Hacking, I. Representing and Intervening.
  4. Worrall, J. Structural Realism: The Best of Both Worlds?
  5. Ladyman, J. What is Structural Realism?
  6. Psillos, S. Scientific Realism: How Science Tracks Truth.
  7. French, S. The Structure of the World.

Comparative Metaphysics

  1. Nāgārjuna. Mūlamadhyamakakārikā.
  2. Vasubandhu. Twenty Verses and Thirty Verses.
  3. Śaṅkara. Commentaries on the Upaniṣads and Brahma Sūtra.
  4. Kaṇāda. Vaiśeṣika Sūtra.
  5. Īśvarakṛṣṇa. Sāṃkhyakārikā.
  6. Whitehead, A. N. Process and Reality.
  7. Heil, J. The Universe as We Find It.

Contact and Contribution

Researchers, philosophers of science, independent scholars, and academic associations interested in foundations of physics, ontology, quantum theory, dark matter, or comparative metaphysics are welcome to propose notes, bibliographies, code repositories, or collaborative discussions.

Contact

Email: zhou@physicsphilosophy.org

Website: physicsphilosophy.org

ORCID: add ORCID link here

Contribution Format

Suggested contributions include technical notes, annotated bibliographies, replication notebooks, model comparisons, philosophical essays, and formal comments on manuscripts.