TY - JOUR
T1 - Continuous-time quantum Monte Carlo study of local non-Fermi liquid state in the multichannel Anderson model
AU - Otsuki, Junya
PY - 2011/7/1
Y1 - 2011/7/1
N2 - The impurity Green's function Gf in the local non-Fermi liquid state is evaluated by means of the continuous-time quantum Monte Carlo method extended to the multichannel Anderson model. For N = M (where N and M are numbers of spin components and channels, respectively), Gf is expressed as-ImGf (ω + i0) = c - b|ω|1/2, and the zero-frequency value c depends only on N (= M). A corresponding impurity self-energy at low frequencies is composed of two parts: a resonance term related to c, and a non-Fermi liquid term proportional to |ω| 1/2. The characteristic energy scale is discussed in terms of the non-Fermi liquid term in the self-energy.
AB - The impurity Green's function Gf in the local non-Fermi liquid state is evaluated by means of the continuous-time quantum Monte Carlo method extended to the multichannel Anderson model. For N = M (where N and M are numbers of spin components and channels, respectively), Gf is expressed as-ImGf (ω + i0) = c - b|ω|1/2, and the zero-frequency value c depends only on N (= M). A corresponding impurity self-energy at low frequencies is composed of two parts: a resonance term related to c, and a non-Fermi liquid term proportional to |ω| 1/2. The characteristic energy scale is discussed in terms of the non-Fermi liquid term in the self-energy.
KW - Continuous-time quantum Monte Carlo (CT-QMC)
KW - Two-channel kondo effect
UR - http://www.scopus.com/inward/record.url?scp=80052413942&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80052413942&partnerID=8YFLogxK
U2 - 10.1143/JPSJS.80SA.SA129
DO - 10.1143/JPSJS.80SA.SA129
M3 - Article
AN - SCOPUS:80052413942
VL - 80
JO - Journal of the Physical Society of Japan
JF - Journal of the Physical Society of Japan
SN - 0031-9015
IS - SUPPL. A
M1 - SA129
ER -