Abstract
Scaling and universality in the Ohmic two-state system is investigated by exploiting the equivalence of this model to the anisotropic Kondo model. For the Ohmic two-state system, we find universal scaling functions for the specific heat , static susceptibility , and spin relaxation function , depending on the reduced temperature (frequency ), with the renormalized tunneling frequency, and uniquely specified by the dissipation strength ( ). The scaling functions can be used to extract and in experimental realizations.
- Received 6 June 1997
DOI:https://doi.org/10.1103/PhysRevLett.80.1038
©1998 American Physical Society