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arXiv · hep-th/9501020

Infrared Regularization of Superstring Theory and the One-Loop Calculation of Coupling Constants

Elias Kiritsis·Costas Kounnas
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Abstract

Infrared regularized versions of 4-D N=1 superstring ground states are constructed by curving the spacetime. A similar regularization can be performed in field theory. For the IR regularized string ground states we derive the exact one-loop effective action for non-zero U(1) or chromo-magnetic fields as well as gravitational and axionic-dilatonic fields. This effective action is IR and UV finite. Thus, the one-loop corrections to all couplings (gravitational, gauge and Yukawas) are unabiguously computed. These corrections are necessary for quantitative string superunification predictions at low energies. The one-loop corrections to the couplings are also found to satisfy Infrared Flow Equations.

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Elias Kiritsis, Costas Kounnas. 1995-04-20. Infrared Regularization of Superstring Theory and the One-Loop Calculation of Coupling Constants. https://doi.org/10.1016/0550-3213(95)00156-m

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