AI Article Synopsis
- Research into heavy fermion systems has sparked interest in the Bose-Fermi Kondo model, driving a study using a large-N dynamical approach.
- The analysis reveals an unstable fixed point at a quantum-critical point when the bosonic bath features a sub-Ohmic spectrum.
- Findings indicate that at this critical threshold, the Kondo scale diminishes, the local spin susceptibility diverges for certain conditions, and a scaling behavior is observed that challenges traditional classical model mappings, highlighting the quantum characteristics of the critical point.
Article Abstract
Studies of non-Fermi-liquid properties in heavy fermions have led to the current interest in the Bose-Fermi Kondo model. Here we use a dynamical large-N approach to analyze an SU(N)xSU(kappaN) generalization of the model. We establish the existence in this limit of an unstable fixed point when the bosonic bath has a sub-Ohmic spectrum (/omega/(1-epsilon)sgnomega, with 0
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| http://dx.doi.org/10.1103/PhysRevLett.93.267201 | DOI Listing |
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