Speaker
Dr
Damianos Iosifidis
(Scuola Superiore Meridionale, Napoli)
Description
I will show how the Belinfante-Rosenfeld improvement terms, that render the energy-momentum tensor symmetric, emerge by coupling the matter to the affine-connection. In this sense the improvement terms correspond to the hypermomentum (microproperties) of matter. I will show how this is realized in two standard examples, the Maxwell field and the Dirac field. I will also show how the connection-matter couplings can also result in a traceless energy tensor when the theory is invariant under frame rescalings, by revisiting the known example of a conformally invariant scalar field. Generalizations to higher derivative as well as higher spin theories will also be discussed.
Primary author
Dr
Damianos Iosifidis
(Scuola Superiore Meridionale, Napoli)
