Abstract
For a general isotropic two-dimensional theory near criticality, the universal singular free energy per correlation volume is equal to , where is the central charge of the theory at criticality, is the usual specific-heat exponent, and is defined (for ) in terms of the second moment of the energy correlations. Some generalizations of this result are also noted.
- Received 25 March 1988
DOI:https://doi.org/10.1103/PhysRevLett.60.2709
©1988 American Physical Society