1,139 research outputs found
A Superspace Formulation for the Master Equation
It is shown that the quantum master equation of the Field Antifield
quantization method at one loop order can be translated into the requirement of
a superfield structure for the action. The Pauli Villars regularization is
implemented in this BRST superspace and the case of anomalous gauge theories is
investigated. The quantum action, including Wess Zumino terms, shows up as one
of the components of a superfield that includes the BRST anomalies in the other
component. The example of W2 quantum gravity is also discussed.Comment: The constrained nature of standard BRST superfields and the
importance of using Alfaro and Damgaard's collective fields in the superspace
approach to avoid undefined superfield derivatives was emphasized. To appear
in Phys. Rev. D. Latex file, 20 page
Wess-Zumino Terms for Reducible Anomalous Gauge Theories
Reducible off-shell anomalous gauge theories are studied in the framework of
an extended Field-Antifield formalism by introducing new variables associated
with the anomalous gauge degrees of freedom. The Wess-Zumino term for these
theories is constructed and new gauge invariances appear. The quantum effects
due to the extra variables are considered.Comment: 31 pages, Latex file, no figures. Section added. To appear in
Nucl.Phys.
One Loop Anomalies and Wess-Zumino Terms for General Gauge Theories
One loop anomalies and their dependence on antifields for general gauge
theories are investigated within a Pauli-Villars regularization scheme. For
on-shell theories {\it i.e.}, with open algebras or on-shell reducible
theories, the antifield dependence is cohomologically non trivial. The
associated Wess-Zumino term depends also on antifields. In the classical basis
the antifield independent part of the WZ term is expressed in terms of the
anomaly and finite gauge transformations by introducing gauge degrees of
freedom as the extra dynamical variables. The complete WZ term is reconstructed
from the antifield independent part.Comment: 15 pages, An example of non-abelian antisymmetric field is added.
Some corrections are made to refrain from using the reconstruction theorem in
the gauge fixed basi
Vortex loop operators, M2-branes and holography
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Branes at Quantum Criticality
In this paper we propose new non-relativistic p+1 dimensional theory. This
theory is defined in such a way that the potential term obeys the principle of
detailed balance where the generating action corresponds to p-brane action.
This condition ensures that the norm of the vacuum wave functional of p+1
dimensional theory is equal to the partition function of p-brane theory.Comment: 17 pages, references added, typos fixed,v2. minor change
Open String Attractors
We present a simple example of a supersymmetric attractor mechanism in the
purely open string context of D-branes embedded in curved space-time. Our
example involves a class of D3-branes embedded in the 2-charge D1-D5 background
of type IIB whose worldvolume contains a 2-sphere. Turning on worldvolume
fluxes, these branes carry induced (p,q) string charges. Supersymmetric
configurations display a flow of the open string moduli towards an attractor
solution independent of their asymptotics. The equations governing this
mechanism closely resemble the attractor flow equations for supersymmetric
black holes in closed string theory. The BPS equations take the form of a
gradient flow and describe worldvolume solitons interpolating between an AdS_2
geometry where the two-sphere has collapsed, and an attractor solution with
AdS_2 x S^2 geometry. In these limiting solutions, the preserved supersymmetry
is enhanced from 4 to 8 supercharges. We also discuss the interpretation of our
solutions as intersecting brane configurations placed in the D1-D5 background,
as well as the S-duality transformation to the F1-NS5 background.Comment: 37 pages, 6 figures. v2: small corrections, figure and references
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