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gr-qc2022
A Note on Stress-Energy Tensor and Variational Principle for Null Strings
E. A. Davydov, D. V. Fursaev, V. A. Tainov
A straightforward application of the variational principle to null strings meets difficulties since string's world-sheets are degenerate. It is known that the variational principle…
gr-qc2022★ 5 cited
Null Cosmic Strings: Scattering by Black Holes, Optics and Spacetime Content
E. A. Davydov, D. V. Fursaev, V. A. Tainov
Equations of motion of null cosmic strings near black holes, or other massive sources, are solved exactly in the weak field approximation. The stress-energy tensor of a null string…