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Anders Irbäck. Photo.

Anders Irbäck

Professor

Anders Irbäck. Photo.

The theory of dynamical random surfaces with extrinsic curvature

Author

  • J. Ambjørn
  • A. Irbäck
  • J. Jurkiewicz
  • B. Petersson

Summary, in English

We analyse numerically the critical properties of a two-dimensional discretized random surface with extrinsic curvature embedded in a three-dimensional space. The use of the toroidal topology enables us to enforce the non-zero external extension without the necessity of defining a boundary and allows us to measure directly the string tension. We show that a phase transition from the crumpled phase to the smooth phase observed earlier for a spherical topology appears also for a toroidal surface for the same finite value of the coupling constant of the extrinsic curvature term. The phase transition is characterized by the vanishing of the string tension. We discuss the possible non-trivial continuum limit of the theory, when approaching the critical point. Numerically we find a value of the critical exponent ν to be between 0.38 and 0.42. The specific heat, related to the extrinsic curvature term seems not to diverge (or diverge slower than logarithmically) at the critical point.

Publishing year

1993-03-29

Language

English

Pages

571-600

Publication/Series

Nuclear Physics, Section B

Volume

393

Issue

3

Document type

Journal article

Publisher

North-Holland

Topic

  • Physical Sciences

Status

Published

ISBN/ISSN/Other

  • ISSN: 0550-3213