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The view that it is symmetries, not particles, that are fundamental to nature is frequently expressed by physicists. But comparatively little has been written either on what this claim means or whethe...
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 projection problem and the symmetries of physics: On the possibility of the scientific realist case
The projection problem symmetries physics
2009/9/16
Dr Harvey Fields, of Czech origin, trained in physics in the US and published several papers on plasma physics in the 1960s. In the late 1970s, he obtained a PhD in history and philosophy of science a...
While empirical symmetries relate situations, theoretical symmetries relate models of a theory we use to represent them. An empirical symmetry is perfect if and only if any two situations it relates s...
Symmetries and invariances in classical physics
Symmetry Classical Mechanics Curie's Principle
2008/4/21
intended as invariance with respect to a transformation (more precisely, with respect to a transformation group), has acquired more and more importance in modern physics. This Chapter explores in 8 Se...
This is the table of contents and first chapter of "Symmetries in physics: philosophical reflections", edited by Katherine Brading and Elena Castellani, Cambridge University Press, 2003. As the organ...
Indiscernibles, General Covariance, and Other Symmetries
Leibniz identity of indiscernibles general covariance
2008/4/14
Leibniz's principle of identity of indiscernibles, formulated in modern logical terms, can be applied in a uniform way to all the exact physical symmetries, including the diffeomorphism group of gener...
describe a problem about the relations among symmetries, laws, and measurable quantities. I explain why several ways of trying to solve it will not work, and I sketch a solution that might work. I di...