Generalized Dirac operators on Lorentzian manifolds and propagation of singularities
classification
🧮 math.DG
math-phmath.APmath.MP
keywords
diracgeneralizedoperatorspropagationsingularitiesalongclassicalcorrect
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We survey the correct definition of a generalized Dirac operator on a Space--Time and the classical result about propagation of singularities. This says that light travels along light--like geodesics. Finally we show this is also true for generalized Dirac operators.
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