On the time-dependent description for the decay of unstable D-branes | Zendy

Kevin Graham | Zendy; Anatoly Konechny | Zendy; J. Teschner | Zendy

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On the time-dependent description for the decay of unstable D-branes

Author(s) -

Kevin Graham,

Anatoly Konechny,

J. Teschner

Publication year - 2007

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2007/02/011

Subject(s) - tachyon , physics , vertex (graph theory) , tachyon condensation , brane cosmology , formalism (music) , string field theory , time evolution , classical mechanics , perturbation (astronomy) , mathematical physics , theoretical physics , string theory , quantum mechanics , mathematics , graph , musical , visual arts , art , discrete mathematics

We discuss how to describe time-dependent phenomena in string theory like thedecay of unstable D-branes with the help of the world-sheet formulation. It isshown in a nontrivial well-controlled example that the coupling of the tachyonsto propagating on-shell modes which escape to infinity can lead totime-dependent relaxation into a stationary final state. The final statecorresponds to a fixed point of the RG flow generated by the relevant fieldfrom which the tachyon vertex operator is constructed. On the way we set up afairly general formalism for the description of slow time-dependent phenomenawith the help of conformal perturbation theory on the world-sheet.

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