384 research outputs found
Currents of Arbitrary Spin in
We study conserved currents of any integer or half integer spin built from
massless scalar and spinor fields in . 2-forms dual to the conserved
currents in are shown to be exact in the class of infinite expansions
in higher derivatives of the matter fields with the coefficients containing
inverse powers of the cosmological constant. This property has no analog in the
flat space and may be related to the holography of the AdS spaces.Comment: LaTeX, 11 pages, no figures; minor changes, version to appear in
Phys.Lett.
Coordinate-Free Action for AdS3 Higher-Spin-Matter Systems
A coordinate-free action principle for the N=2 supersymmetric model of spin 0
and spin 1/2 matter fields interacting via Chern-Simons higher spin gauge
fields in AdS3 is formulated in terms of star-product algebra of two
oscillators. Although describing proper relativistic dynamics the action does
not contain space-time coordinates. It is given by a supertrace of a
forth-order polynomial in the 3d higher spin superalgebra. The theory admits a
free parameter characterizing the inequivalent vacua associated with the
parameter of mass m of the matter fields. For the case of the massless matter,
the model has a form of the noncommutative 2d Yang-Mills theory with some
infinite-dimensional gauge group. The limit m\to\infty corresponds to the
SU(\infty) 2d Yang-Mills theory.Comment: LaTeX, 14 pages, no figures; revised version to be published in
Phys.Lett.
Gauge invariant Lagrangian formulation of massive higher spin fields in (A)dS_3 space
We develop the frame-like formulation of massive bosonic higher spins fields
in the case of 3-dimensional space with the arbitrary cosmological
constant. The formulation is based on gauge-invariant description by involving
the Stueckelberg auxiliary fields. The explicit form of the Lagrangians and the
gauge transformation laws are found. The theory can be written in terms of
gauge-invariant objects similar to the massless theories, thus allowing us to
hope to use the same methods for investigation of interactions. In the massive
spin 3 field example we are able to rewrite the Lagrangian using the new the
so-called separated variables, so that the study of Lagrangian formulation
reduces to finding the Lagrangian containing only half of the fields. The same
construction takes places for arbitrary integer spin field as well. Further
working in terms of separated variables, we build Lagrangian for arbitrary
integer spin and write it in terms of gauge-invariant objects. Also, we
demonstrate how to restore the full set of variables, thus receiving Lagrangian
for the massive fields of arbitrary spin in the terms of initial fields.Comment: 12 page
Domain Walls with Strings Attached
We have constructed a bulk & brane action of IIA theory which describes a
pair of BPS domain walls on S_1/Z_2, with strings attached. The walls are given
by two orientifold O8-planes with coincident D8-branes and `F1-D0'-strings are
stretched between the walls. This static configuration satisfies all matching
conditions for the string and domain wall sources and has 1/4 of unbroken
supersymmetry.Comment: 12 pages, JHE
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