String Theory Seminar - Pair-production of cusps on a string in AdS_3, Dr David Vegh (Queen Mary University of London) Seminar
- Time:
- 15:00 - 17:00
- Date:
- 7 February 2018
- Venue:
- Lecture Theatre 7C, Room 7033, Building 54, Mathematical Sciences, University of Southampton, Highfield Campus, SO17 1BJ
For more information regarding this seminar, please email Olga Papadoulaki at O.Papadoulaki@southampton.ac.uk .
Event details
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
Dr David Vegh , Queen Mary, University of London. Centre for Research in String Theory.