Closed String Tachyons and RG flows | Zendy

Takao Suyama | Zendy

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Closed String Tachyons and RG flows

Author(s) -

Takao Suyama

Publication year - 2002

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 - 10.1088/1126-6708/2002/10/051

Subject(s) - tachyon , tachyon condensation , physics , sigma , string (physics) , coupling constant , tachyonic field , scalar (mathematics) , flow (mathematics) , string theory , mathematical physics , constant (computer programming) , sigma model , theoretical physics , quantum electrodynamics , quantum mechanics , non critical string theory , mathematics , mechanics , geometry , nonlinear system , computer science , gauge boson , gauge theory , higgs mechanism , programming language

We consider bulk tachyon condensations in a non-linear sigma model whose lowenergy effective theory contains a nontrivial scalar potential. We argue thatone would typically encounter a strong coupling background along a RG flowcorresponding to a bulk tachyon condensation, beyond which the RG analysiswould not be reliable. In a range of the flow in which the string couplingconstant is small, we can show that the tachyon condensation actually decreasesthe central charge of the sigma model.Comment: 9 page

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