Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-10-22
Phys.Rev.Lett. 82 (1999) 267-270
Physics
High Energy Physics
High Energy Physics - Theory
Author Information under http://www.physik.fu-berlin.de/~kleinert/institution.html . Latest update of paper also at http://w
Scientific paper
10.1103/PhysRevLett.82.267
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 D_H=2. Crumpling is prevented by the new term which suppresses configurations with rapidly changing extrinsic curvature.
Diamantini Cristina M.
Kleinert Hagen
Trugenberger Carlo A.
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