The vacuum skeleton diagrams with thick propagator lines of P[G] up to second order. up to second order to the sum of the first, ... We find the perturbation series of O[G] by comparing (2.20) diagram by diagram with the perturbation series ofanbsp;...

Title | : | Self-consistent Quantum-Field Theory and Bosonization for Strongly Correlated Electron Systems |

Author | : | Rudolf Haussmann |

Publisher | : | Springer Science & Business Media - 2003-07-01 |

Continue