This is a long wavelength oscillation of a field which is nearly stationary: there are states with zero frequency, so that the theory cannot have a mass gap.
The conclusion is that there are states with zero frequency, that the theory cannot have a mass gap. This is a long wavelength oscillation of a field which is nearly stationary.
This is a long wavelength oscillation of a field which is nearly stationary. The conclusion is that there are states with zero frequency, that the theory cannot have a mass gap.
This is a long wavelength oscillation of a field which is nearly stationary. The conclusion is that there are states with zero frequency, that the theory cannot have a mass gap.