Wedges, cones, cosmic strings and their vacuum energy

  title={Wedges, cones, cosmic strings and their vacuum energy},
  author={Stephen A. Fulling and Cynthia Trendafilova and Phuongmai Truong and Jef Wagner},
  journal={Journal of Physics A: Mathematical and Theoretical},
One of J Stuart Dowker’s most significant achievements has been to observe that the theory of diffraction by wedges developed a century ago by Sommerfeld and others provided the key to solving two problems of great interest in general-relativistic quantum field theory during the last quarter of the 20th century: the vacuum energy associated with an infinitely thin, straight cosmic string, and (after an interchange of time with a space coordinate) the apparent vacuum energy of empty space as… 
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