"In quantum field theory, a false vacuum is a metastable sector of space which appears to be a perturbative vacuum but is unstable to instanton effects which may tunnel to a lower energy state. This tunneling can be caused by quantum fluctuations or the creation of high energy particles. Simply put, the false vacuum is a local minimum, but not the lowest energy state, even though it may remain stable for some time. This is analogous to metastability for first order phase transitions."...
Apparently, Doctor Spock has been posting on Wikipedia!
Apparently, Doctor Spock has been posting on Wikipedia!