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added to quantum anomaly
an uncommented link to Liouville cocycle
a paragraph with the basic idea of fermioninc anomalies
the missing reference to Witten’s old article on spin structures and fermioninc anomalies.
The entry is still way, way, stubby. But now a little bit less than a minute ago ;-
added the story of gauge anomalies via first BV-BRST cohomology to quantum anomaly
Added the reference
added pointers to electronic repositories (doi:
, euclid:
, jstor:
) for all of the following items:
Luis Alvarez-Gaumé, Edward Witten, Gravitational Anomalies Nucl. Phys. B234 (1984) 269 (doi:10.1016/0550-3213(84)90066-X, spire:192309)
Luis Alvarez-Gaumé, Paul Ginsparg, The structure of gauge and gravitational anomalies, Ann. Phys. 161 (1985) 423. (doi:10.1016/0003-4916(85)90087-9, spire:202565)
Edward Witten, Global gravitational anomalies, Commun. Math. Phys. 100 (1985) 197. (doi:10.1007/BF01212448, euclid:1103943444)
Michael Atiyah, Isadore Singer, Dirac operators coupled to vector potentials, Proc. Nat. Acad. Sci. USA 81, 2597-2600 (1984) (doi:10.1073/pnas.81.8.2597, jstor:23378)
Jean-Michel Bismut, Daniel Freed, The analysis of elliptic families. I. Metrics and connections on determinant bundles , Comm. Math. Phys. 106 (1986), no. 1, 159–176 (doi:10.1007/BF01210930, euclid:1104115586)
Jean-Michel Bismut, Daniel Freed, The analysis of elliptic families. II. Dirac operators, eta invariants, and the holonomy theorem , Comm. Math. Phys. 107 (1986), no. 1, 103–163 (doi:10.1007/BF01206955, euclid:1104115934)
Daniel Freed, Determinants, torsion, and strings, Comm. Math. Phys. Volume 107, Number 3 (1986), 483-513. (doi:10.1007/BF01221001, euclid:1104116145)
added pointer to this review
and references on anomaly inflow:
Curtis Callan, Jeffrey Harvey, Anomalies and Fermion Zero Modes on Strings and Domain Walls, Nucl. Phys. B250 (1985) 427-436 (doi:10.1016/0550-3213(85)90489-4, spire:15691)
Edward Witten, Kazuya Yonekura, Anomaly Inflow and the -Invariant (arXiv:1909.08775, spire:1755070)
Yes, that’s why after having performed the Berezin integral, what remains is a function of the bosonic fields (since the fermions have been integrated out!), or rather is, globally, a section of a line bundle over the bosonic field values, whose non-triviality is the anomaly.
So as stated it was correct and to the point.
Hence I have rolled back your edit.
(I can, of course, see that there is plenty of room to expand on what the entry says at this point, be more pedagogical, add examples and details on actual formulas. Maybe later.)
Added:
Anomalies originate in the 1949 article by Steinberger:
Another early reference is
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