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hep-th2000★ 14 cited
The Dirac field in Taub-NUT background
Ion I. Cotăescu, Mihai Visinescu
We investigate the SO(4,1) gauge-invariant theory of the Dirac fermions in the external field of the Kaluza-Klein monopole, pointing out that the quantum modes can be recovered fro…
gr-qc2000★ 49 cited
External symmetry in general relativity
Ion I. Cotaescu
We propose a generalization of the isometry transformations to the geometric context of the field theories with spin where the local frames are explicitly involved. We define the e…