%0 Journal Article %T Topologica Defects and Corrections to the Nambu Action %A Vanda Silveira %A M. D. Maia %J Physics %D 1993 %I arXiv %R 10.1016/0375-9601(93)90138-P %X The effective action of a (1+2)-dimensional defect is obtained as an expansion in powers of the thickness.Considering non-straight solutions as the zero order term, the corrections to the Nambu action are found to depend on the curvature scalar and on the gaussian curvature . %U http://arxiv.org/abs/gr-qc/9303017v1