Ebert - Psi-k
Ebert - Psi-k
Ebert - Psi-k
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Ludwig<br />
Maximilians-<br />
Universität<br />
München<br />
Solving the impurity problem<br />
pure host<br />
τ host<br />
=<br />
⎡⎛<br />
⎢⎜<br />
⎣⎝<br />
t host<br />
t host<br />
...<br />
⎞−1 ⎤<br />
− G 0<br />
⎟<br />
⎠<br />
⎥<br />
⎦<br />
−1<br />
impurity system<br />
⎡⎛<br />
τ imp<br />
= ⎢⎜<br />
⎣⎝<br />
t imp<br />
t host<br />
...<br />
⎞−1 ⎤<br />
− G 0<br />
⎟<br />
⎠<br />
⎥<br />
⎦<br />
−1<br />
partition of matrices leads to<br />
τ 00<br />
imp = [<br />
(t imp ) −1 − (t host ) −1 + (τ 00<br />
host )−1] −1<br />
KKR07 – p.46/100
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