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

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

doi:10.1016/j.physleta.2010.09.053

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 journal › Article › peer-review

14 Scopus citations

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 language	English (US)
Pages (from-to)	4637-4641
Number of pages	5
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	374
Issue number	46
DOIs	https://doi.org/10.1016/j.physleta.2010.09.053
State	Published - Oct 18 2010

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1016/j.physleta.2010.09.053

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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.",

author = "Anderson, {Tom H.} and MacKay, {Tom G.} and Akhlesh Lakhtakia",

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AU - MacKay, Tom G.

AU - Lakhtakia, Akhlesh

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

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