Critical theories for the pseudogap Kondo problem
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
We discuss quantum phase transitions in the pseudogap Kondo problem, which describes a magnetic moment coupled to conduction electrons with a power-law density of states, ρ(ω)∝|ω|r. We show that different perturbative expansions, together with renormalization group techniques, provide effective low-energy field theories for the relevant critical fixed points. In particular, we review expansions near the lower- and upper-critical dimensions of the problem, being r=0 and r=1, respectively.
Details
Original language | English |
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Pages (from-to) | 77-79 |
Number of pages | 3 |
Journal | Physica B: Condensed Matter |
Volume | 359-361 |
Issue number | SPEC. ISS. |
Publication status | Published - 30 Apr 2005 |
Peer-reviewed | Yes |
Externally published | Yes |
Keywords
ASJC Scopus subject areas
Keywords
- Kondo effect, Quantum phase transitions