Numerical renormalization group for bosonic systems and application to the sub-ohmic spin-boson model
Related Experiment Video
Updated: Aug 14, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Ralf Bulla1, Ning-Hua Tong, Matthias Vojta
1Theoretische Physik III, Elektronische Korrelationen und Magnetismus, Universität Augsburg, Augsburg, Germany.
Abstract:
We describe the generalization of Wilson's numerical renormalization group method to quantum impurity models with a bosonic bath, providing a general nonperturbative approach to bosonic impurity models which can access exponentially small energies and temperatures. As an application, we consider the spin-boson model, describing a two-level system coupled to a bosonic bath with power-law spectral density, J(omega) proportional to omega(s). We find clear evidence for a line of continuous quantum phase transitions for sub-Ohmic bath exponents 0
More Related Videos
Related Concept Videos
The Pauli Exclusion Principle
Atomic Nuclei: Nuclear Spin State Overview
Atomic Nuclei: Nuclear Spin State Population Distribution
Spin–Spin Coupling Constant: Overview
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must have a...
Spin–Spin Coupling: One-Bond Coupling
¹H NMR: Pople Notation
A proton...

