Some exact results on tachyon condensation in string field theory | Zendy

David Kutasov | Zendy; Marcos Mariño | Zendy; Gregory W. Moore | Zendy

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Some exact results on tachyon condensation in string field theory

Author(s) -

David Kutasov,

Marcos Mariño,

Gregory W. Moore

Publication year - 2000

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 - 10.1088/1126-6708/2000/10/045

Subject(s) - tachyon condensation , tachyon , tachyonic field , worldsheet , physics , string field theory , string (physics) , mathematical physics , theoretical physics , spacetime , non critical string theory , bosonic string theory , field (mathematics) , relationship between string theory and quantum field theory , brane cosmology , string theory , classical mechanics , quantum mechanics , mathematics , pure mathematics , quantum gravity , gauge boson , gauge theory , quantum , higgs mechanism

The study of open string tachyon condensation in string field theory can bedrastically simplified by making an appropriate choice of coordinates on thespace of string fields. We show that a very natural coordinate system issuggested by the connection between the worldsheet renormalization group andspacetime physics. In this system only one field, the tachyon, condenses whileall other fields have vanishing expectation values. These coordinates are alsowell-suited to the study of D-branes as solitons. We use them to show that thetension of the D25-brane is cancelled by tachyon condensation and computeexactly the profiles and tensions of lower dimensional D-branes.Comment: 25 pages, harvma

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