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A First Class Constraint Generates Not a Gauge Transformation,But a Bad Physical Change:The Case of Electromagnetism
empirical equivalence gauge freedom quantum gravity problem of time
2016/6/15
In Dirac-Bergmann constrained dynamics, a first-class constraint typically does not _alone_ generate a gauge transformation. By direct calculation it is found that each first-class constraint in Maxwe...
Circumveiloped by Obscuritads.The nature of interpretation in quantum mechanics,hermeneutic circles and physical reality,with cameos of James Joyce and Jacques Derrida
quantum mechanics interpretation reality hermeneutics realism
2016/6/14
The quest for finding the right interpretation of Quantum Mechanics (QM) is as old as QM and still has not ended, and may never end. The question what an interpretation of QM is has hardly ever been r...
Physical Determination of the Action
relativity foundations of dynamics measurement abstraction quantification energy momentum mass fundamental equation
2016/6/13
Physical theories ought to be built up from colloquial notions such as 'long bodies', 'energetic sources' etc. in terms of which one can define pre-theoretic ordering relations such as 'longer than', ...
A quantum physical argument for panpsychism
consciousness causal efficacy quantum superposition quantum-to-classical transition panpsychism
2016/6/13
It has been widely thought that consciousness has no causal efficacy in the physical world. However, this may be not the case. In this paper, we show that a conscious being can distinguish definite pe...
Causal Foundationalism,Physical Causation,and Difference-Making
Causation Difference-Making Physical Causation Causal Foundationalism
2016/6/13
An influential tradition in the philosophy of causation has it that all token causal facts are, or are reducible to, facts about difference-making. Challenges to this tradition have typically focused ...
Similarity,Topology,and Physical Significance in Relativity Theory
similarity topology physical significance general relativity models contextualism
2016/6/13
Stephen Hawking, among others, has proposed that the topological stability of a property of spacetime is a necessary condition for it to be physically significant. What counts as stable, however, depe...
Physical Symmetries,Overarching Symmetries,and Consistency
Philosophy of Physics Philosophy of Science Metaphysics Symmetry
2016/5/31
In this paper I provide an account of physical symmetries, which are defined relative to a specific physical theory, and overarching symmetries, which hold across many different physical theories. I o...
“The most philosophically of all the sciences”:Karl Popper and physical cosmology
Karl Popper Hermann Bondi cosmology falsifiability demarcation steady state theory
2016/5/30
Problems of scientific cosmology only rarely occur in the works of Karl Popper. Nevertheless, it was a subject that interested him and which he occasionally commented on. What is more important, his g...
A πάρεργα und παραλειπŏμενα of J-M. Levy-Leblond ''On the Conceptual Nature of the Physical Constants''.
dimensional analysis conceptual change coordination class conceptual space physical constant epistemic relationships between mathematics and physics
2016/5/30
Starting, at first, from some little known but notable formal remarks made by the mathematician Gabriele Darbo about the qualitative dimensional analysis of the physical quantities, for then, above al...
Is There a Unique Physical Entropy?Micro versus Macro
entropy Gibbs paradox (in)distinguishability
2016/5/30
Entropy in thermodynamics is an extensive quantity, whereas standard methods in statistical mechanics give rise to a non-extensive expression for the entropy. This discrepancy is often seen as a sign ...
Primitive Ontology and the Structure of Fundamental Physical Theories
Quantum theories primitive ontology wave function ontology symmetry properties
2016/5/27
For a long time, it was believed that it was impossible to be realist about quantum mechanics. It took quite a while for the researchers in the foundations of physics, beginning with John Stuart Bell ...
Dirty Liberals!Reminders of Physical Cleanliness Influence Moral and Political Attitudes
morality social cognition priming
2015/11/10
Many moral codes place a special emphasis on bodily purity, and manipulations that directly target bodily purity have been shown to influence a variety of moral judgments. Across two studies, we demon...
Classical Mechanics Is Lagrangian; It Is Not Hamiltonian; The Semantics of Physical Theory Is Not Semantical
classical mechanics Lagrangian mechanics Hamiltonian mechanics
2009/11/18
One can (for the most part) formulate a model of a classical system
in either the Lagrangian or the Hamiltonian framework. Though it is
often thought that those two formulations are equivalent in al...
《The Analysis of Mind 》Lecture V. Psychological and Physical Causal Laws
分析哲学 Analytic Philosophy Bertrand Russell 罗素
2008/7/28
The traditional conception of cause and effect is one which modern science shows to be fundamentally erroneous, and requiring to be replaced by a quite different notion, that of LAWS OF CHANGE. In the...
Formal Systems as Physical Objects: A Physicalist Account of Mathematical Truth
mathematical truth physicalism formal systems deduction
2008/4/22
This paper is a brief formulation of a radical thesis. We start with the formalist doctrine that mathematical objects have no meanings; we have marks and rules governing how these marks can be combine...