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In a similar approach the effective vertex function of the single impurity Anderson model was recently written as a sum of three functions, each dependent on only one singular frequency (Ref.).
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In a similar approach the effective vertex function of the single impurity Anderson model was recently written as a sum of three functions, each dependent on only one singular frequency (Ref.).
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In particular, since the form factors do not depend on frequency, we assume that the frequency dependence of the vertex function is described well by the singular frequency l0.
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In particular, since the form factors do not depend on frequency, we assume that the frequency dependence of the vertex function is described well by the singular frequency l0.
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As noted before, all quantities are measured in units of t=1.
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As noted before, all quantities are measured in units of t=1.
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