Comment on "What does the Letelier-Gal'tsov metric describe?"
G. Clement, D.V. Gal'tsov, P.S. Letelier
TL;DR
This paper clarifies that the Letelier-Gal'tsov metric accurately describes multiple moving straight strings in general relativity, resolving recent concerns about discontinuities by confirming it satisfies Einstein's equations under specific conditions.
Contribution
It demonstrates that the LG metric is a valid solution to Einstein's equations for straight, uniformly moving strings, addressing previous doubts about its consistency.
Findings
LG metric solves Einstein's equations for straight, moving strings
Discontinuity concerns are resolved under specific conditions
Validates the use of LG metric in modeling cosmic strings
Abstract
We show that the Letelier-Gal'tsov (LG) metric describing multiple crossed strings in relative motion does solve the Einstein equations, in spite of the discontinuity uncovered recently by Krasnikov [gr-qc/0502090] provided the strings are straight and moving with constant velocities.
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Taxonomy
TopicsAdvanced Thermodynamics and Statistical Mechanics · Quantum Mechanics and Applications · Atomic and Subatomic Physics Research