13,044 research outputs found
Supersymmetric Adler-Bardeen anomaly in N=1 super-Yang-Mills theories
We provide a study of the supersymmetric Adler--Bardeen anomaly in the super-Yang--Mills theories. We work in the component formalism that
includes shadow fields, for which Slavnov--Taylor identities can be
independently set for both gauge invariance and supersymmetry. We find a method
with improved descent equations for getting the solutions of the consistency
conditions of both Slavnov--Taylor identities and finding the local field
polynomials for the standard Adler--Bardeen anomaly and its supersymmetric
counterpart. We give the explicit solution for the ten-dimensional case.Comment: 9 pages ; references adde
Encoding models for scholarly literature
We examine the issue of digital formats for document encoding, archiving and
publishing, through the specific example of "born-digital" scholarly journal
articles. We will begin by looking at the traditional workflow of journal
editing and publication, and how these practices have made the transition into
the online domain. We will examine the range of different file formats in which
electronic articles are currently stored and published. We will argue strongly
that, despite the prevalence of binary and proprietary formats such as PDF and
MS Word, XML is a far superior encoding choice for journal articles. Next, we
look at the range of XML document structures (DTDs, Schemas) which are in
common use for encoding journal articles, and consider some of their strengths
and weaknesses. We will suggest that, despite the existence of specialized
schemas intended specifically for journal articles (such as NLM), and more
broadly-used publication-oriented schemas such as DocBook, there are strong
arguments in favour of developing a subset or customization of the Text
Encoding Initiative (TEI) schema for the purpose of journal-article encoding;
TEI is already in use in a number of journal publication projects, and the
scale and precision of the TEI tagset makes it particularly appropriate for
encoding scholarly articles. We will outline the document structure of a
TEI-encoded journal article, and look in detail at suggested markup patterns
for specific features of journal articles
On mean-convex Alexandrov embedded surfaces in the 3-sphere
We consider mean-convex Alexandrov embedded surfaces in the round unit
3-sphere, and show under which conditions it is possible to continuously deform
these preserving mean-convex Alexandrov embeddedness.Comment: arXiv admin note: substantial text overlap with arXiv:1309.427
Weak transition matrix elements from finite-volume correlation functions
The two-body decay rate of a weakly decaying particle (such as the kaon) is
shown to be proportional to the square of a well-defined transition matrix
element in finite volume. Contrary to the physical amplitude, the latter can be
extracted from finite-volume correlation functions in euclidean space without
analytic continuation. The K -> pi pi transitions and other non-leptonic decays
thus become accessible to established numerical techniques in lattice QCD.Comment: Plain TeX source, 19 pages, figures include
Jump-sparse and sparse recovery using Potts functionals
We recover jump-sparse and sparse signals from blurred incomplete data
corrupted by (possibly non-Gaussian) noise using inverse Potts energy
functionals. We obtain analytical results (existence of minimizers, complexity)
on inverse Potts functionals and provide relations to sparsity problems. We
then propose a new optimization method for these functionals which is based on
dynamic programming and the alternating direction method of multipliers (ADMM).
A series of experiments shows that the proposed method yields very satisfactory
jump-sparse and sparse reconstructions, respectively. We highlight the
capability of the method by comparing it with classical and recent approaches
such as TV minimization (jump-sparse signals), orthogonal matching pursuit,
iterative hard thresholding, and iteratively reweighted minimization
(sparse signals)
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