# Functional renormalization group approach to the singlet-triplet transition in quantum dots.

@article{Magnusson2012FunctionalRG, title={Functional renormalization group approach to the singlet-triplet transition in quantum dots.}, author={Einar B. Magnusson and Nils Frederik Hasselmann and Ivan Andreevich Shelykh}, journal={Journal of physics. Condensed matter : an Institute of Physics journal}, year={2012}, volume={24 36}, pages={ 365602 } }

We present a functional renormalization group approach to the zero bias transport properties of a quantum dot with two different orbitals and in the presence of Hund's coupling. Tuning the energy separation of the orbital states, the quantum dot can be driven through a singlet-triplet transition. Our approach, based on the approach by Karrasch et al (2006 Phys. Rev. B 73 235337), which we apply to spin-dependent interactions, recovers the key characteristics of the quantum dot transport…

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