Co-Existence of Superconductivity and Ferromagnetism in Pr Doped YBCO
Moges Tsega
Broschiertes Buch

Co-Existence of Superconductivity and Ferromagnetism in Pr Doped YBCO

The retarded double-time Green¿s function of Solid state Physics

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The Green functions are especially useful for summing over the restricted classes of perturbation theory of diagrams, and are very powerful when combined with spectral representations. They play the most important part in the field-theoretical treatment of the many-body problem, and they are flexible enough to describe the effects of retarded interactions and all quantities of physical interest like thermodynamic properties can be derived from them. There are different types of Green functions,or propagators: One particle, two-particle,..., n particle, advanced, retarded, zero-temperature, fin...