1998/10/31 by M. C. Diamantini, H. Kleinert, Carlo A. Trugenberger +1 · 1 citation
Physics and Astronomy · #Black Holes and Theoretical Physics #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #astro-ph #hep-th
paper · pdf · doi:10.1103/physrevlett.82.267
published as Phys.Rev.Lett. 82 (1999) 267-270 · Author Information under http://www.physik.fu-berlin.de/~kleinert/institution.html . Latest update of paper also at http://www.physik.fu-berlin.de/~kleinert/kleiner_re276
arxiv created 1998/12/13 · openalex publication_date 1999/01/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We propose a new string model by adding a higher-order gradient term to the rigid string, so that the stiffness can be positive or negative without loosing stability. In the large- D approximation, the model has three phases, one of which with a new type of generalized ``antiferromagnetic'' orientational correlations. We find an infrared-stable fixed point describing world sheets with vanishing tension and Hausdorff dimension DH\phantom\rule0ex0ex=\phantom\rule0ex0ex2. Crumpling is prevented by the new term which suppresses configurations with rapidly changing extrinsic curvature.