# Does the Yang Mills Mass Gap represent “Absolute Bottom”?

The question of the existence of a Yang Mills mass gap is a complex and technical one.

In this paper Philip Gibbs asks "Is fundamentality then a relative concept with no absolute bottom, or is there a fundament of physical law which is not derived from anything deeper? "

Are these two questions the same? I ask specifically, is the question of whether or not $$\Delta >0$$ one and the same question as whether there is an "absolute bottom" as P Gibbs puts it?

• Looks like you want to solve one of Millennium Prize Problems. – Alex Trounev Mar 20 '19 at 19:00
• @AlexTrounev I don't think an answer to this question would get us much closer to that! If I could just understand the problem statement of this particular problem I'd be a lot happier! – samerivertwice Mar 20 '19 at 19:11
• No, they are utterly unrelated. Some QFTs have a mass gap, others do not. – Mitchell Porter Mar 20 '19 at 20:45