In Bohmian mechanics Hall's decomposition separates momentum variance into classical dispersion from the guidance field plus a quantum term from amplitude variations, with weak-value real and imaginary parts mapping directly onto the two terms.
Therefore, we can integrate the identity over the entire โ๐: โซ โฃ โ๐ ๐ดฬ๐(๐ฑ)โฃ2 ๐๐ฑ = โซ โฃ ๐(๐ฑ) โ๐ โฃ2 ๐๐ค 2 (๐ฑ)๐๐ฑ + โซ (Im[๐โ(๐ฑ)(๐ดฬ๐)(๐ฑ)]) 2 โฃ ๐(๐ฑ)โฃ2 โ๐ ๐๐ฑ
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Hall's exact variance decomposition in Bohmian Mechanics
In Bohmian mechanics Hall's decomposition separates momentum variance into classical dispersion from the guidance field plus a quantum term from amplitude variations, with weak-value real and imaginary parts mapping directly onto the two terms.