query about ALPHA2 and linewidth in eliasberg function

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topgun
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query about ALPHA2 and linewidth in eliasberg function

Post by topgun »

dear all,

The alpha2 in eliasberg spectral function [?2F(?)] depends on linewidths.
1.what is the meaning of linewidth?
i.e alpha2=?/?
2.what does above formula tells about alpha square?

THANKS IN ADVANCE

topgun

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