Vacuum string field theory without matter-ghost factorization | Zendy

Nadav Drukker | Zendy; Yuji Okawa | Zendy

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Vacuum string field theory without matter-ghost factorization

Author(s) -

Nadav Drukker,

Yuji Okawa

Publication year - 2005

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 - 10.1088/1126-6708/2005/06/032

Subject(s) - string field theory , physics , factorization , boundary (topology) , mathematical physics , conformal field theory , operator (biology) , string theory , string (physics) , brane , field (mathematics) , non critical string theory , boundary value problem , field theory (psychology) , string cosmology , conformal map , theoretical physics , relationship between string theory and quantum field theory , mathematics , quantum mechanics , mathematical analysis , pure mathematics , quantum gravity , biochemistry , chemistry , algorithm , repressor , transcription factor , quantum , gene

We show that vacuum string field theory with the singular kinetic operatorconjectured by Gaiotto, Rastelli, Sen and Zwiebach can be obtained by fieldredefinition from a regular theory constructed by Takahashi and Tanimoto. Wesolve the equation of motion both by level truncation and by a series expansionusing the regulated butterfly state, and we find evidence that the energydensity of a D25-brane is well defined and finite. Although the equation ofmotion naively factorizes into the matter and ghost sectors in the singularlimit, subleading terms in the kinetic operator are relevant and thefactorization does not strictly hold. Nevertheless, solutions corresponding todifferent D-branes can be constructed by changing the boundary condition in theboundary conformal field theory formulation of string field theory, and ratiosof D-brane tensions are shown to be reproduced correctly.Comment: 31 pages, 1 figure, LaTeX2e; v2: one reference added, minor change

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