Journal
PHYSICS LETTERS A
Volume 313, Issue 5-6, Pages 472-477Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0375-9601(03)00846-6
Keywords
dynamical symmetry breaking; effective action; composite operators; long-range interaction; high-T-c superconductors
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We derive the effective potential for composite fields in a class of (quasi)planar models with long-range interactions. This class of models can be relevant for high temperature superconductors and graphite. The fractal structure of the effective potential is revealed and its physical interpretation is presented. It is argued that the multi-branched fractal structure of the potential reflects the presence of an infinite tower of excitonic bound states that occur as a result of the long-range interactions. (C) 2003 Elsevier B.V. All rights reserved.
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