Rolling tachyons from Liouville theory | Zendy

Volker Schomerus | Zendy

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Rolling tachyons from Liouville theory

Author(s) -

Volker Schomerus

Publication year - 2003

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 - 10.1088/1126-6708/2003/11/043

Subject(s) - tachyon , limit (mathematics) , liouville field theory , mathematical physics , physics , extrapolation , string theory , field theory (psychology) , euclidean geometry , string (physics) , unitary state , quantum mechanics , mathematics , mathematical analysis , relationship between string theory and quantum field theory , quantum gravity , geometry , political science , law , quantum

In this work we propose an exact solution of the c=1 Liouville model, i.e. ofthe world-sheet theory that describes the homogeneous decay of a closed stringtachyon. Our expressions are obtained through careful extrapolation from thecorrelators of Liouville theory with c > 25. In the c=1 limit, we find twodifferent theories which differ by the signature of Liouville field. TheEuclidean limit coincides with the interacting c=1 theory that was constructedby Runkel and Watts as a limit of unitary minimal models. The couplings for theLorentzian limit are new. In contrast to the behavior at c > 1, amplitudes inboth c=1 models are non-analytic in the momenta and consequently they are notrelated by Wick rotation.Comment: 22 page

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