Could it be Pati-Salam, at the end?
Posted May14-10 at 06:43 PM by arivero
Both
U(1)xSU(3)xSU(2)xSU(2)
and the full
SU(4)xSU(2)xSU(2)
live in 8 extra dimensions, as F-theory lives, and they probably need one of the extra dimensions to be infinitesimal, because U(1) B-L is not gauged, at least not at the scales we know.
The manifolds, by the way, are
S1 x CP2 x S3
and
S5 x S3
respectively.
The later is more complete and it allows to generate Witten's manifols almost automagically. But the former group has an interesting counting if we consider the gauge bosons to be massless and supersymetry unbroken, with three generations of quarks and leptons. Then we have
96 sfermions
2 states of U(1)
16 of SU(3)
6 of SU(2)
6 of SU(2)
2 in the 4D graviton.
128 total. And no obvious place for the higgs... technicolor/topcolor and susy?
U(1)xSU(3)xSU(2)xSU(2)
and the full
SU(4)xSU(2)xSU(2)
live in 8 extra dimensions, as F-theory lives, and they probably need one of the extra dimensions to be infinitesimal, because U(1) B-L is not gauged, at least not at the scales we know.
The manifolds, by the way, are
S1 x CP2 x S3
and
S5 x S3
respectively.
The later is more complete and it allows to generate Witten's manifols almost automagically. But the former group has an interesting counting if we consider the gauge bosons to be massless and supersymetry unbroken, with three generations of quarks and leptons. Then we have
96 sfermions
2 states of U(1)
16 of SU(3)
6 of SU(2)
6 of SU(2)
2 in the 4D graviton.
128 total. And no obvious place for the higgs... technicolor/topcolor and susy?
Total Comments 1
Comments
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great! thanks a lot!Posted Jun13-10 at 03:24 AM by bettywadlingt 
