while doing some calculations such as calculating the Bohr radius or velocity of an excitons in semiconductors such as GaAs I didnt understand why is it allowed to use the static permittivity even though the electron and hole aren't as heavy and the spectra is measured at high frequencies such as [tex]\omega=10^{15}Hz[/tex]?(adsbygoogle = window.adsbygoogle || []).push({});

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# Calculating the Bohr radius or velocity of an excitons

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