Research output: Contribution to journal › Journal article

Published

Article number | 045002 |
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<mark>Journal publication date</mark> | 1/02/2008 |

<mark>Journal</mark> | Journal of Physics A: Mathematical and Theoretical |

Issue number | 4 |

Volume | 41 |

Number of pages | 7 |

Pages (from-to) | - |

<mark>State</mark> | Published |

<mark>Original language</mark> | English |

We present a calculation of the one-particle equal time correlation function.(x) for the one-dimensional (1D) Hubbard model in the infinite U limit. We consider the zero temperature spin incoherent regime, which is obtained by first taking the limit U --> infinity and then the limit T --> 0. Using the determinant representation for.(x), we derive analytical expressions for both large and small x at an arbitrary filling factor 0 < rho < 1/ 2. The large x asymptotics of rho(x) is found to be remarkably accurate starting from x sin(2 pi rho) similar to 1. We find that the one-particle momentum distribution function rho(k) is a smooth function of k, and. rho'(k) is peaked at k = 2k(F) in contrast to spin-coherent liquid obeying the Luttinger theorem.