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math-ph2013
A formal framework for the study of the notion of undefined particle number in quantum mechanics
Newton da Costa, Federico Holik
It is usually stated that quantum mechanics presents problems with the identity of particles, the most radical position -supported by E. Schrodinger- asserting that elementary par…
math-ph1999★ 1 cited
The Atiyah-Singer index theorem and the gauge field copy problem
Adonai S. Sant'Anna, Newton C. A. da Costa, Francisco A. Doria
K-theory allows us to define an analytical condition for the existence of `false' gauge field copies through the use of the Atiyah-Singer index theorem. After establishing that res…