1,015 research outputs found
Structure of Fluctuation Terms in the Trace Dynamics Ward Identity
We give a detailed analysis of the anti-self-adjoint operator contribution to
the fluctuation terms in the trace dynamics Ward identity. This clarifies the
origin of the apparent inconsistency between two forms of this identity
discussed in Chapter 6 of our recent book on emergent quantum theory.Comment: TeX; 14 pages. Dedicated to Rafael Sorkin on the occasion of his 60th
birthda
Poincar\'e Supersymmetry Representations Over Trace Class Noncommutative Graded Operator Algebras
We show that rigid supersymmetry theories in four dimensions can be extended
to give supersymmetric trace (or generalized quantum) dynamics theories, in
which the supersymmetry algebra is represented by the generalized Poisson
bracket of trace supercharges, constructed from fields that form a trace class
noncommutative graded operator algebra. In particular, supersymmetry theories
can be turned into supersymmetric matrix models this way. We demonstrate our
results by detailed component field calculations for the Wess-Zumino and the
supersymmetric Yang-Mills models (the latter with axial gauge fixing), and then
show that they are also implied by a simple and general superspace argument.Comment: plaintex, 23 Page
Anomalies to All Orders
I give an account of my involvement with the chiral anomaly, and with the
nonrenormalization theorem for the chiral anomaly and the all orders
calculation of the trace anomaly, as well as related work by others. I then
briefly discuss implications of these results for more recent developments in
anomalies in supersymmetric theories.Comment: 35 pages, latex; To appear in Fifty Years of Yang-Mills Theory, G. 't
Hooft editor, to be published by World Scientific. Final version; references
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symmetry breaking by rank three and rank two antisymmetric tensor scalars
We study symmetry breaking by rank three and rank two antisymmetric
tensor fields. Using tensor analysis, we derive branching rules for the adjoint
and antisymmetric tensor representations, and explain why for general
one finds the same generator mismatch that we noted earlier in special
cases. We then compute the masses of the various scalar fields in the branching
expansion, in terms of parameters of the general renormalizable potential for
the antisymmetric tensor fields.Comment: Latex, 11 pages; v2 has a minor revision above Eq. (30
SU(8) family unification with boson-fermion balance
We formulate an family unification model motivated by requiring that
the theory should incorporate the graviton, gravitinos, and the fermions and
gauge fields of the standard model, with boson--fermion balance. Gauge field
anomalies cancel between the gravitinos and spin
fermions. The 56 of scalars breaks to , with the fermion representation content needed for
"flipped" with three families, and with residual scalars in the
and representations that break flipped to the standard
model. Dynamical symmetry breaking can account for the generation of
representation scalars needed to break the electroweak group. Yukawa couplings
of the 56 scalars to the fermions are forbidden by chiral and gauge symmetries,
so in the first stage of breaking fermions remain massless. In the
limit of vanishing gauge coupling, there are and supersymmetries
relating the scalars to the fermions, which restrict the form of scalar
self-couplings and should improve the convergence of perturbation theory, if
not making the theory finite and "calculable". In an Appendix we give an
analysis of symmetry breaking by a Higgs component, such as the of
the 56 under , which has
nonzero generator.Comment: Latex, 20 pages. To appear in a World Scientific volume celebrating
the 50th anniversary of the quark model, H. Fritzsch and M. Gell-Mann, eds.,
and also in International Journal of Modern Physics A, Vol. 29 (2014) 1450130
(18 pages
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