Abstract

We show that the Hamiltonian of (N=1;d=10) super Yang-Mills can be expressed as a quadratic form in a very similar manner to that of the (N=4;d=4) theory. We find a similar quadratic form structure for pure Yang-Mills theory but this feature, in the non-supersymmetric case, seems to be unique to four dimensions. We discuss some consequences of this feature.

Highlights

  • Maximally supersymmetric theories, among the supersymmetric ones, that exhibit this property

  • We find a similar quadratic form structure for pure Yang-Mills theory but this feature, in the non-supersymmetric case, seems to be unique to four dimensions

  • If we could successfully ‘lift’ or ‘oxidize’ this quadratic form structure to eleven dimensions, the eleven-dimensional theory would exhibit E7(7) invariance assuming that the ‘lifting’ process commutes with the exceptional generators

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Summary

Super Yang-Mills theory

This section serves as a brief review of the results in [1, 8] relevant to this paper. With the introduction of anticommuting Grassmann variables θm and θm (m, n, p, q, · · · = 1, 2, 3, 4, denote SU(4) spinor indices), all the physical degrees of freedom can be captured in one superfield φ (y). The supersymmetry generators are of two varieties: kinematical and dynamical. The kinematical (spectrum generating) supersymmetries q m +. While the dynamical supersymmetries are obtained by boosting the kinematical ones qm−. For the dynamical (non-linear) generators, we have to find non-linear terms such that the algebra closes. The key ingredient in proving this is the use of the “inside-out constraint” (2.8) This point is important since it implies that other supersymmetric Yang-Mills theories cannot be expressed as simple quadratic forms since those theories have no such constraint on the superfield

Ten dimensions
The kinetic term
The cubic interaction vertex
The quartic interaction vertex
Pure Yang-Mills
A note on gauge invariance
Non-helicity basis
Conclusions
Full Text
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