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i know what is coherent state, but i read this text in an article and i don't understand this

"

if we wish

to describe long range macroscopic forces, only bosonic fields will do, since fermionic fields

cannot build up classical coherent states. "

can you explain it for me, how fermionic fields can't build a classical coherent state?

and what's classical coherent state?

i know something about quantum coherent state which has minimum uncertainly.

thanks