Classical and quantum D-branes in 2D string theory

John McGreevy, Herman Verlinde, Joerg Teschner

Research output: Contribution to journalArticlepeer-review

71 Scopus citations


We investigate two classes of D-branes in 2-d string theory, corresponding to extended and localized branes, respectively. We compute the string emission during tachyon condensation and reinterpret the results within the c = 1 matrix model. As in [2], we find that the extended branes describe classical eigenvalue trajectories, while, as found in [3], the localized branes correspond to the quantum field that creates and destroys eigenvalues. The matrix model relation between the classical probe and the local collective field precisely matches with the descent relation between the boundary states of D-strings and D-particles.

Original languageEnglish (US)
Pages (from-to)1021-1045
Number of pages25
JournalJournal of High Energy Physics
Issue number1
StatePublished - Jan 1 2004

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


  • D-branes
  • Matrix Models
  • Tachyon Condensation


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