Effective action and tension renormalization for cosmic and fundamental strings

Buonanno, Alessandra; Damour, Thibault

doi:10.1016/S0370-2693(98)00609-1

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Effective action and tension renormalization for cosmic and fundamental strings

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Buonanno, Alessandra
Institut des Hautes Etudes Scientifiques;
Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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hep-th_9803025.pdf
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PLB432_51.pdf
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Citation

Buonanno, A., & Damour, T. (1998). Effective action and tension renormalization for cosmic and fundamental strings. Physics Letters B, 432, 51-57. doi:10.1016/S0370-2693(98)00609-1.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-BDD5-1

Abstract

We derive the effective action for classical strings coupled to dilatonic, gravitational, and axionic fields. We show how to use this effective action for: (i) renormalizing the string tension, (ii) linking ultraviolet divergences to the infrared (long-range) interaction between strings, (iii) bringing additional light on the special cancellations that occur for fundamental strings, and (iv) pointing out the limitations of Dirac's celebrated field-energy approach to renormalization.