Physical account of Weyl anomaly from Dirac Sea
Physical account of Weyl anomaly from Dirac Sea
We rederive in a physical manner the Weyl anomaly in two-dimensional spaceā€“time by considering the Dirac Sea. It is regularized by some bosonic extra species which are formally negatively counted. In fact, we calculate the trace of the energyā€“momentum tensor in the Dirac Sea in presence of background gravitational field. ā€¦