Limitations on the superposition principle: superselection rules in non-relativistic quantum mechanics
نویسندگان
چکیده
منابع مشابه
On Relativistic Non-linear Quantum Mechanics
The possibility that quantum mechanics itself could be non-linear has run up against difficulties with relativistic covariance. Most of the schemes proposed up to now engender superluminal communication, and those that don’t, have been equivalent to linear theories. We show in a simplified model that a proposal based on the consistent histories approach to quantum mechanics avoids the usual dif...
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We show that superselection rules do not enhance the information-theoretic security of quantum cryptographic protocols. Our analysis employs two quite different methods. The first method uses the concept of a reference system—in a world subject to a superselection rule, unrestricted operations can be simulated by parties who share access to a reference system with suitable properties. By this m...
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Abstract: On the basis of the relativistic symmetry of Minkowski space, we derive a Lorentz invariant equation for a spread electron. This equation slightly differs from the Dirac equation and includes additional terms originating from the spread of an electron. Further, we calculate the anomalous magnetic moment based on these terms. These calculations do not include any divergence; therefore,...
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A thesis submitted in partial fulfilment of the requirements for the degree of
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ژورنال
عنوان ژورنال: European Journal of Physics
سال: 1998
ISSN: 0143-0807,1361-6404
DOI: 10.1088/0143-0807/19/3/005