In quantum field theory, the Klein transformation is a redefinition of the fields to amend the spin-statistics theorem. == Bose–Einstein == Suppose φ {\displaystyle \varphi } and χ {\displaystyle \chi } are fields such that, if x and y are spacelike-separated points and i and j represent the spinor/tensor indices, [ φ i ( x ) , φ j ( y ) ] = [ χ i ( x ) , χ j ( y ) ] = { φ i ( x ) , χ j ( y ) } = 0.
In quantum field theory, the Klein transformation is a redefinition of the fields to amend the spin-statistics theorem. == Bose–Einstein == Suppose φ {\displaystyle \varphi } and χ {\displaystyle \chi } are fields such that, if x and y are spacelike-separated points and i and j represent the spinor/tensor indices, [ φ i ( x ) , φ j ( y ) ] = [ χ i ( x ) , χ j ( y ) ] = { φ i ( x ) , χ j ( y ) } = 0.
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