We know that the uncertainty principle tells us that the product
of the standard deviation of energy and the standard deviation in
time must always be greater than h-bar. Since there is a unit
element of action, is there a unit element of power as well? In
other words, if action is always present, then must power always be
positive?
Clarification: This is not intended to be a question related to
people who think that there is "vacuum energy/zero point...