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27 January 2021
  » arxiv » cond-mat/0308470

 Article overview

Non-Unitary Spin-Charge Separation in One-Dimensional Fermion Gas
Vadim V. Cheianov ; M. B. Zvonarev ;
Date 23 Aug 2003
Journal Phys. Rev. Lett. 92, 176401 (2004)
Subject Strongly Correlated Electrons; Mathematical Physics | cond-mat.str-el math-ph math.MP
AbstractIn this Letter we report exact results on the infrared asymptotics of 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 $-1/2.$
Source arXiv, cond-mat/0308470
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