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The University of Southampton
STAG Research Centre

String Theory seminar - David Vegh Seminar

Time:
15:00 - 17:00
Date:
7 February 2018
Venue:
54/7033(7C)

For more information regarding this seminar, please email Olga Papadoulaki, Brandon Robinson at [email protected], [email protected] .

Event details

Pair-production of cusps on a string in AdS_3

The classical motion of a Nambu-Goto string in AdS_3 spacetime is governed by the generalized sinh-Gordon equation. It can locally be reduced to the sinh-Gordon, cosh-Gordon, or Liouville equation, depending on the value of the scalar curvature of the induced metric. In this talk, I examine solutions that contain both sinh-Gordon-type and cosh-Gordon-type regions. I show that near the boundaries of these regions (generalized) solitons can be classically pair-produced. The solitons move subluminally (superluminally) in the sinh-Gordon (cosh-Gordon) region on the worldsheet, and they correspond to cusps on the string. For the calculations, I use an exact discretization of the equation of motion. The solutions correspond to segmented strings.

Speaker information

David Vegh , Queen Mary University of London.

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