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Sep
2
answered Kepler problem: flows generated by constants of motion
Sep
2
revised Darwin term and Zitterbewegung
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Sep
1
revised Darwin term and Zitterbewegung
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Sep
1
answered Darwin term and Zitterbewegung
Aug
30
answered Ideal 2D Unicycle Kinematics
Aug
27
answered polarization and frequency of a single photon
Aug
27
answered Aharonov-Bohm Effect and Flux Quantization in superconductors
Aug
19
answered what is the relationship between these two sorts of anomalies?
Aug
16
answered Two-loop regularization
Aug
16
comment Why do some anomalies (only) lead to inconsistent quantum field theories
Sorry for the late response, I added an update to the answer addressing your question and relating to Drake's remark. I have edited the account about the Mickelsson’s project which did not reflect my opinion on the importance of this approach which I think that is very valuable.
Aug
16
revised Why do some anomalies (only) lead to inconsistent quantum field theories
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Aug
13
comment First class and second class constraints
When all the 5 constraints are first class, then one has to choose 5 functions on the phase space (gauge fixing conditions)$\chi_{\alpha}$, such that the matrix $M_{\alpha\beta} = \{\chi_{\alpha}, \phi_{\beta}\}|_{\Sigma^{\prime}}$ is every where nonsingular on the constraint plus gauge fixing surface $\Sigma^{\prime}$
Aug
13
revised First class and second class constraints
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Aug
13
answered First class and second class constraints
Aug
12
answered Why do some anomalies (only) lead to inconsistent quantum field theories
Aug
2
comment Classical and quantum anomalies
Actually, I have a little more information on this subject. I'll try to add an update when I can
Aug
2
comment Classical and quantum anomalies
(cont.) webcache.googleusercontent.com/…
Aug
2
comment Classical and quantum anomalies
(cont.) But, if one uses the Sugawara construction for the Virasoro generators from the current generators, the Virasoro central charge (in the Poisson brackets) will be zero. However, in the Liouville theory one already obtains a nonvanishing Virasoro central charge in the Poisson brackets, please see the following article by Toppan:
Aug
2
comment Classical and quantum anomalies
Here are some examples referring to both your questions. In the WZNW model in two dimensions, one gets the Kac-Moody algebra at the classical level (Poisson brackets) with the correct central charge. In fact this computation was performed by Witten in his original article: projecteuclid.org/…. For a more clear derivation please see: citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.148.8249
Aug
1
revised Bohr model with all Quantum numbers for hydrogen atom
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