607 research outputs found
Vertex Operators for the Supermembrane
We derive the vertex operators that are expected to govern the emission of
the massless d=11 supermultiplet from the supermembrane in the light cone
gauge. We demonstrate that they form a representation of the supersymmetry
algebra and reduce to the type IIA superstring vertex operators under double
dimensional reduction, as well as to the vertices of the d=11 superparticle in
the point-particle limit. As a byproduct, our results can be used to derive the
corresponding vertex operators for matrix theory and to describe its linear
coupling to an arbitrary d=11 supergravity background. Possible applications
are discussed.Comment: 22 pages, LaTeX, uses axodraw.sty; v2: minor changes, version to be
published in JHE
An Introduction to the Quantum Supermembrane
We review aspects of quantisation of the 11-dimensional supermembrane world
volume theory. We explicitly construct vertex operators for the massless states
and study interactions of supermembranes. The open supermembrane and its vertex
operators are discussed. We show how our results have direct applications to
Matrix theory by appropriate regularisation of the supermembrane.Comment: 24pgs, 4 figure
On the supersymmetric effective action of Matrix theory
We present a simple derivation of the supersymmetric one-loop effective
action of SU(2) Matrix theory by expressing it in a compact exponential form
whose invariance under supersymmetry transformations is obvious. This result
clarifies the one-loop exactness of the leading v^4 interactions and the
absence of non-perturbative corrections.Comment: 6 pages, LaTeX. Minor changes, version to be published in PL
POSTER: Privacy-preserving Indoor Localization
Upcoming WiFi-based localization systems for indoor environments face a
conflict of privacy interests: Server-side localization violates location
privacy of the users, while localization on the user's device forces the
localization provider to disclose the details of the system, e.g.,
sophisticated classification models. We show how Secure Two-Party Computation
can be used to reconcile privacy interests in a state-of-the-art localization
system. Our approach provides strong privacy guarantees for all involved
parties, while achieving room-level localization accuracy at reasonable
overheads.Comment: Poster Session of the 7th ACM Conference on Security & Privacy in
Wireless and Mobile Networks (WiSec'14
A Unified Component Modeling Approach for Performance Estimation in Hardware/Software Codesign
This paper presents an approach for abstract modeling of hardware/software architectures using Hierarchical Colored Petri Nets. The approach is able to capture complex behavioral characteristics often seen in software and hardware architectures, thus it is suitable for high level codesign issues such as performance estimation. In this paper, the development of a model of the ARM7 processor [5] is described to illustrate the full potential of the modeling approach. To further illustrate the approach, a cache model is also described. The approach and related tools are currently being implemented in the LYCOS system [12]. Details and the basic characteristics of the approach can be found in [8]
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