Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Nonunitary spin-charge separation in a one-dimensional fermion gas.
AU - Cheianov, Vadim V.
AU - Zvonarev, M.
N1 - A new spin-incoherent'state of strongly correlated electron matter in one dimension has been predicted. The proposed theory has been later applied to explain transport anomalies in quantum wires and stimulated a new approach to thermometry of atomic gases in elongated traps. [27 citations] RAE_import_type : Journal article RAE_uoa_type : Physics
PY - 2004/4/30
Y1 - 2004/4/30
N2 - In this Letter we report exact results on the infrared asymptotics of the one-particle dynamical correlation function of the gas of impenetrable spin 1/2 fermions at infinitesimal temperature. The correlation function shows signs of spin-charge separation with scaling behavior in the charge part and exponential decay as a function of the space coordinate in the spin part. Surprisingly, the anomalous dimensions in the charge part do not correspond to any unitary conformal field theory. We find that the fermion spectral weight has a power law divergency at low energy with the anomalous exponent -1/2.
AB - In this Letter we report exact results on the infrared asymptotics of the one-particle dynamical correlation function of the gas of impenetrable spin 1/2 fermions at infinitesimal temperature. The correlation function shows signs of spin-charge separation with scaling behavior in the charge part and exponential decay as a function of the space coordinate in the spin part. Surprisingly, the anomalous dimensions in the charge part do not correspond to any unitary conformal field theory. We find that the fermion spectral weight has a power law divergency at low energy with the anomalous exponent -1/2.
U2 - 10.1103/PhysRevLett.92.176401
DO - 10.1103/PhysRevLett.92.176401
M3 - Journal article
VL - 92
SP - 176401
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 17
ER -