Ray trajectories for a spinning cosmic string and a manifestation of self-cloaking

Tom H. Anderson, Tom G. MacKay, Akhlesh Lakhtakia

Research output: Contribution to journalArticle

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Abstract

A study of ray trajectories was undertaken for the Tamm medium which represents the spacetime of a zero-tension cosmic spinning string, under the geometric-optics approximation. Our numerical studies revealed that: (i) rays never cross the string's boundary; (ii) the Tamm medium supports evanescent waves in regions of phase space that correspond to those regions of the string's spacetime which could support closed timelike curves; and (iii) a spinning string can be slightly visible while a non-spinning string is almost perfectly invisible.

Original languageEnglish (US)
Pages (from-to)4637-4641
Number of pages5
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume374
Issue number46
DOIs
Publication statusPublished - Oct 18 2010

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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