TY - JOUR
T1 - Ray trajectories for a spinning cosmic string and a manifestation of self-cloaking
AU - Anderson, Tom H.
AU - MacKay, Tom G.
AU - Lakhtakia, Akhlesh
N1 - Funding Information:
T.H.A. is supported by an EPSRC (UK) Vacation Bursary . T.G.M. is supported by a Royal Academy of Engineering/Leverhulme Trust Senior Research Fellowship . A.L. thanks the Charles Godfrey Binder Endowment at Penn State for partial financial support of his research activities. The authors are grateful to an anonymous referee for drawing their attention to [30,32] .
PY - 2010/10/18
Y1 - 2010/10/18
N2 - 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.
AB - 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.
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U2 - 10.1016/j.physleta.2010.09.053
DO - 10.1016/j.physleta.2010.09.053
M3 - Article
AN - SCOPUS:77957750826
SN - 0375-9601
VL - 374
SP - 4637
EP - 4641
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 46
ER -