Central Extensions in Physics
... of a quantum mechanical system determines a (anti-) unitary transformation of the Hilbert space, which is unique up to a phase factor eiϑ . As an immediate consequence of this phase factor, one deduces that given a quantum mechanical symmetry group G there exists an extension G0 of G by U (1) (the p ...
... of a quantum mechanical system determines a (anti-) unitary transformation of the Hilbert space, which is unique up to a phase factor eiϑ . As an immediate consequence of this phase factor, one deduces that given a quantum mechanical symmetry group G there exists an extension G0 of G by U (1) (the p ...
(A SOMEWHAT GENTLE INTRODUCTION TO) DIFFERENTIAL
... a bit of motivation for the study of those gadgets in Appendix A. (For instance, they allow for a version of Theorem 1.2 where ϕ is only assumed to have finite G-dimension [5].) In particular, we do not assume that the reader is familiar with the semidualizing world. What These Notes Are Not. These ...
... a bit of motivation for the study of those gadgets in Appendix A. (For instance, they allow for a version of Theorem 1.2 where ϕ is only assumed to have finite G-dimension [5].) In particular, we do not assume that the reader is familiar with the semidualizing world. What These Notes Are Not. These ...
