Lawrence Krauss just wrote an interesting letter: “Higgs Seesaw Mechanism as a Source for Dark Energy” – Krauss & Dent, PRL 2013
in it he argues for a see-saw mechanism in the Higgs sector which gives a natural scale for dark energy which is small, as observed.
The key point is that the energy scale is suppressed by
λ ~ (mH/mX)2)
where mH is the Higgs scale and X is some unification scale with mX >> mH
as a bonus you may expect a new long range weak force to go with the new physics.
Potentially interesting speculation.
Many moons ago, I wrote almost massless world on this here very blog…
where I was pondering deep issues of cosmological constants and symmetries (this was back during the flap over Lisi’s speculations)
and along the way I came up with this:
“…the “prediction” of the Higgs mass really is just numerology, although I could imaging something analogous to a see-saw mechanism driving such a relation in some theory.
If I were really cleverbold I would have predicted that the Standard Model required a non-zero Lambda
But, yeah, smoothly running the Higgs mass with Lambda uses the cosmological constant to solve the hierarchy problem and postdicts the cosmology…”
(see also earlier comment)
this is the problem with blogging – if I hadn’t had the blog to release my random speculations the sheer frustration might have driven me to write the PRL instead…