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Duality and decay of macroscopic F-strings

Skliros, Dimitri P.; Copeland, Edmund J.; Saffin, Paul M.


Dimitri P. Skliros

Edmund J. Copeland


We study the decay of fundamental string loops of arbitrary size L/min(n,m)≫√α′, labeled by (n, m; λn, ¯λm), where n, m correspond to left- and right-mover harmonics and λn, ¯λm to polarization tensors, and find that a description in terms of the recent coherent vertex operator construction of Hindmarsh and Skliros is computationally very efficient. We primarily show that the decay rates and mass shifts of vertex operators (n, m; λn, ¯λm) and their “duals” (n, m; λn, ¯λ∗m) are equal to leading order in the string coupling, implying, for instance, that decay rates of epicycloids equal those of hypocycloids. We then compute the power and decay rates associated with massless IR radiation for the trajectory (1, 1; λ1, ¯λ1), and find that it is precisely reproduced by the low energy effective theory of Dabholkar and Harvey. Guided by this correspondence, we conjecture the result for arbitrary trajectories (n, m; λn, ¯λm) and discover a curious relation between gravitational and axion plus dilaton radiation. It is now possible to start exploring string evolution in regimes where a low energy effective description is less useful, such as in the vicinity of cusps.


Skliros, D. P., Copeland, E. J., & Saffin, P. M. (2013). Duality and decay of macroscopic F-strings. Physical Review Letters, 111(4),

Journal Article Type Article
Acceptance Date Jul 1, 2013
Publication Date Jul 23, 2013
Deposit Date Apr 24, 2017
Publicly Available Date Apr 24, 2017
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 111
Issue 4
Article Number 041601
Public URL
Publisher URL
Copyright Statement Copyright information regarding this work can be found at the following address:


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Copyright information regarding this work can be found at the following address:

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