Quantum phase transitions in a resonant-level model with dissipation: Renormalization-group studies

Details Quantum phase transitions in a resonant-level model with dissipation: Renormalization-group studies Quantum phase transitions in a resonant-level model with dissipation: Renormalization-group studies

2007-06-14

arxiv.org/abs/0706.2085v1

Phys. Rev. B 76, 235103 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

14 pages, 14 eps figures

Scientific paper

10.1103/PhysRevB.76.235103

We study a spinless level that hybridizes with a fermionic band and is also coupled via its charge to a dissipative bosonic bath. We consider the general case of a power-law hybridization function $\Gamma(\w)\propto |\w|^r$ with $r\ge 0$, and a bosonic bath spectral function $B(\w)\propto \w^s$ with $s\ge -1$. For $r<1$ and $\mathrm{max}(0,2r-1)

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