AT3 - Higher Dimensional Theories |
Speaker_ |
Mitskievich, Nikolai V. |
Talk _ |
Electromagnetism and perfect fluids interplay in multidimensional spacetimes |
Abstract _ |
It is shown that in the physical interpretation of different fields (in the sense of their tensor rank etc.) crucially depends on the number of spacetime dimensions $D$ under consideration. In particular, the vector massless field is justly interpreted as electromagnetic in $D=4$ (3+1), but in $D=3$ (2+1) it has the energy-momentum tensor identical with that of a perfect fluid. It is demonstrated that the true analogues of electromagnetic field exist only in even-dimensional spacetimes. |