Truths and principles of the study of matter, space, time and energy
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In philosophy, the philosophy of physics deals with conceptual and interpretational issues in modern physics, many of which overlap with research done by certain kinds of theoretical physicists. Historically, philosophers of physics have engaged with questions such as the nature of space, time, matter and the laws that govern their interactions, as well as the epistemological and ontological basis of the theories used by practicing physicists. The discipline draws upon insights from various areas of philosophy, including metaphysics, epistemology, and philosophy of science, while also engaging with the latest developments in theoretical and experimental physics.
Contemporary work focuses on issues at the foundations of the three pillars of modern physics:
Quantum Mechanics: Interpretation of quantum theory, including the nature of quantum states, the measurement problem, and the role of observers. Implications of entanglement, nonlocality, and the quantum-classical relationship are also explored.
Relativity: Conceptual foundations of special and general relativity, including the nature of spacetime, simultaneity, causality, and determinism. Compatibility with quantum mechanics, gravitational singularities, and philosophical implications of relativistic cosmology are also investigated.
Statistical Mechanics: Relationship between microscopic and macroscopic descriptions, interpretation of probability, origin of irreversibility and the arrow of time. Foundations of thermodynamics, role of information theory in understanding entropy, and implications for explanation and reduction in physics.
Other areas of focus include the nature of physical laws, symmetries, and conservation principles; the role of mathematics; and philosophical implications of emerging fields like quantum gravity, quantum information, and complex systems. Philosophers of physics have argued that philosophical analysis clarifies foundations, interprets implications, and guides theory development in physics.
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