DIRAC’s BRA AND KET NOTATION
نویسنده
چکیده
1 From inner products to bra-kets Dirac invented a useful alternative notation for inner products that leads to the concepts of bras and kets. The notation is sometimes more efficient than the conventional mathematical notation we have been using. It is also widely although not universally used. It all begins by writing the inner product differently. The rule is to turn inner products into bra-ket pairs as follows ( u , v ) −→ (u| v) . (1.1)
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