Question

A field occupies space, contains energy, and its presence precludes a classical "true vacuum". Is the above statement true or false? Justify your inclusion with not more than ten examples

Answer 1

In quantum field theory, a false vacuum is a hypothetical vacuum that is somewhat, but not entirely, stable. It may last for a very long time in that state, and might eventually move to a more stable state. The most common suggestion of how such a change might happen is called bubble nucleation – if a small region of the universe by chance reached a more stable vacuum, this "bubble" (also called "bounce"[1][2]) would spread.