618 research outputs found
Brane Rotating Symmetries and the Fivebrane Equations of Motion
We show that the fully covariant equations of motion for the M-theory
fivebrane can be interpreted as charge conservation equations. The associated
charges induce `shift'-symmetries of the scalar, spinor and gauge-fields of the
fivebrane, so allowing an interpretation of all these fields as Goldstone
fields. We also find that the fivebrane possesses a new symmetry that is part
of the GL(32) automorphism group of the eleven dimensional supersymmetry
algebra.Comment: 15 pages, late
A Calibration Bound for the M-Theory Fivebrane
We construct a covariant bound on the energy-momentum of the M-fivebrane
which is saturated by all supersymmetric configurations. This leads to a
generalised notion of a calibrated geometry for M-fivebranes when the
worldvolume gauge field is non-zero. The generalisation relevant for Dp-branes
is also given.Comment: 9 pages, LaTeX2e, uses vmargin.sty. Typos corrected, a reference and
a new discussion on conserved charges added. v4: A typo in the expression for
the D-fourbrane energy correcte
On the Energy Momentum Tensor of the M-Theory Fivebrane
We construct the energy momentum tensor for the bosonic fields of the
covariant formulation of the M-theory fivebrane within that formalism. We then
obtain the energy for various solitonic solutions of the fivebrane equations of
motion.Comment: 12 pages, LaTeX2e, uses vmargin.sty and amstex.st
Operator product expansions in four-dimensional superconformal field theories
The operator product expansion in four-dimensional superconformal field theory is discussed. The OPE takes a particularly simple form for chiral operators, in N=1 and N=2, and for analytic operators, in N=2 and N=4. It is argued that the Green's functions of such operators can be determined up to constants.The operator product expansion in four-dimensional superconformal field theory is discussed. The OPE takes a particularly simple form for chiral operators, in and , and for analytic operators, in and . It is argued that the Green's functions of such operators can be determined up to constants.The operator product expansion in four-dimensional superconformal field theory is discussed. It is demonstrated that the OPE takes a particularly simple form for certain classes of operators. These are chiral operators, principally of interest in theories with N = 1 or N = 2 supersymmetry, and analytic operators, of interest in N = 2 and N = 4. It is argued that the Green's functions of such operators can be determined up to constants
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