(a) The correlation function used in (9.6.10) is not Hermitian. Show that if the correlation function is...

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(a) The correlation function

used in (9.6.10) is not Hermitian. Show that if the correlation function is made Hermitian by the method used in (9.6.5), the spectral function will be symmetric with respect to ω = 0.

(b) Find the spectral function for the case of a noninteracting boson gas, for a symmetrized correlation function.

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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 08:19 AM

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(a) The correlation function used in (9.6.10) is not Hermitian. Show that if the correlation function is...

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(vac|a(t)a (0) | vac)

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A B The Hermitians Green function reads as and its Fourier transform is ...View the full answer

Solid State Physics Essential Concepts

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