Verify the revised Wicks theorem (8.13.7) explicitly for the thermal average of four operators, (a (t)b (t)b

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Verify the revised Wick’s theorem (8.13.7) explicitly for the thermal average of four operators,

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Solid State Physics Essential Concepts

ISBN: 9781107191983

2nd Edition

Authors: David W. Snoke

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Question Posted: Aug 20, 2023 08:27 AM

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Verify the revised Wicks theorem (8.13.7) explicitly for the thermal average of four operators, (a (t)b (t)b

Question:

(a (t₁)b (t)b (1₂)a (1₂2)). k

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The term of interest is ak7b7b 72a 72 T Since the a and b opera tors commute proving Wicks theorem a...View the full answer

Solid State Physics Essential Concepts

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