Decay modes of unstable strings in planewave string field theory
CaltechAUTHORS
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Title 
Decay modes of unstable strings in planewave string field theory


Creator 
Bonderson, Parsa


Subject 
Caltech Library Services


Description 
The cubic interaction vertex of lightcone string field theory in the planewave background has a simple ffective form when considering states with only bosonic excitations. This simple effective interaction vertex is used in this paper to calculate the three string interaction matrix elements for states of arbitrary bosonic excitation and these results are used to examine certain decay modes on the massshell. It is shown that the matrix elements of one string to two string decays involving only bosonic excitations will vanish to all orders in 1/[Greek mu] on the massshell when the number of excitations on the initial string is less than or equal to two, but in general will not vanish when the number of excitations is greater than two. Also, a truncated calculation of the massshell matrix elements for one string to three string decays of two excitation states is performed and suggests that these matrix elements do not vanish on the massshell. There is, however, a quantitative discrepancy between this last result and its (also nonvanishing) gauge theory prediction from the BMN correspondence.


Publisher 
Springer


Date 
200406


Type 
Article
PeerReviewed 

Format 
application/pdf


Identifier 
http://authors.library.caltech.edu/263/1/BONjhep04.pdf
Bonderson, Parsa (2004) Decay modes of unstable strings in planewave string field theory. Journal of High Energy Physics, 2004 (06025). 025. ISSN 11266708. http://resolver.caltech.edu/CaltechAUTHORS:BONjhep04 <http://resolver.caltech.edu/CaltechAUTHORS:BONjhep04> 

Relation 
http://resolver.caltech.edu/CaltechAUTHORS:BONjhep04
http://authors.library.caltech.edu/263/ 
