Question

what is ghost ( quantum field theory)

Answer 1

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an apparition of a dead person which is believed to appear or become manifest to the living, typically as a nebulous image.

"the building is haunted by the ghost of a monk"

synonyms:spectre, phantom, wraith, spirit, soul, shadow, presence; 

Its LOVV ROY
(EXPERT)

Answer 2

A ghost is a soul or a spirit of a dead person or an animal that can appear to a living person. It is just a believe. There are many references about in history. The overwhelming consensus of science is that ghost really don't exists.


But now a days todays science is on the way to prove these paranormal activities.