Putting the Nordic into Nordic Jewish Studies

Review of Jewish Studies in the Nordic Countries Today, edited by Ruth Illman and Björn Dahla (2016)

The 'Failure' of Youth Culture: Reflexivity, Music and Politics in the Black Metal Scene

This article examines an enduring question raised by subcultural studies: how youth culture can be challenging and transgressive, yet '��fail'�� to produce wider social change. This question is addressed through a case study of the black metal music scene. The black metal scene flirts with violent racism, yet has resisted embracing outright fascism. The article argues that this is due to the way in which music is '��reflexively antireflexively'�� constructed as a depoliticizing category. It is argued that an investigation of such forms of reflexivity might explain the enduring '��failure'�� of youth cultures to change more than their immediate surroundings

A note on the Harris-Kesten Theorem

Recently, a short proof of the Harris-Kesten result that the critical probability for bond percolation in the planar square lattice is 1/2 was given, using a sharp threshold result of Friedgut and Kalai. Here we point out that a key part of this proof may be replaced by an argument of Russo from 1982, using his approximate zero-one law in place of the Friedgut-Kalai result. Russo's paper gave a new proof of the Harris-Kesten Theorem that seems to have received little attention.Comment: 4 pages; author list changed, acknowledgement adde

Religious Popular Music: Between the Instrumental, Transcendent and Transgressive

The use of post-rock ‘n’ roll popular music genres by religious groups is accompanied by a notable ambiguity: Is religious popular music designed to be an instrumental tool for outreach/evangelism, or does it have an intrinsic value in summoning and exploring the transcendent? The article focuses on the previously rarely explored idea that the instrumental use of popular music in Christian andJewish settings is often much more important than its transcendent qualities. The importance of the instrumental in Christian and Jewish popular music reveals itself in subtle and not-so-subtle signifiers and practices that point to an anxious desire to discipline music’s possible transgressive force

Hiding Single Photons With Spread Spectrum Technology

We describe a proof-of-principal experiment demonstrating the use of spread spectrum technology at the single photon level. We show how single photons with a prescribed temporal shape, in the presence of interfering noise, may be hidden and recovered.Comment: 4 pages, 5 figures

‘If not with others, how?’: Creating Rabbinic Activists Through Study

Together we seek to model the redemptive, liberatory, activist, feminist approach to collaborative working to which both authors are committed as teachers, students, rabbis and activists. In our rabbinic chain of tradition (more particularly through other female rabbis) we explore, through the lenses of student and teacher, the 5-year rabbinic course at Leo Baeck College (LBC). We seek to demonstrate how, when working at its best, LBC trains rabbis as activists. Our contention is that the rabbinic education at LBC has the potential to be transformative in creating rabbis as activist leaders, an ideal which ought to transcend the rabbinic training seminary and be taken forward into community

The Molecular Migdal Effect

Nuclear scattering events with large momentum transfer in atomic, molecular, or solid-state systems may result in electronic excitations. In the context of atomic scattering by dark matter (DM), this is known as the Migdal effect, but the same effect has also been studied in molecules in the chemistry and neutron scattering literature. Here we present two distinct Migdal-like effects from DM scattering in molecules, which we collectively refer to as the molecular Migdal effect: a center-of-mass recoil, equivalent to the standard Migdal treatment, and a non-adiabatic coupling resulting from corrections to the Born-Oppenheimer approximation. The molecular bonds break spherical symmetry, leading to large daily modulation in the Migdal rate from anisotropies in the matrix elements. Our treatment reduces to the standard Migdal effect in atomic systems but does not rely on the impulse approximation or any semiclassical treatments of nuclear motion, and as such may be extended to models where DM scatters through a long-range force. We demonstrate all of these features in a few simple toy models of diatomic molecules, namely ${\rm H}_2^+$, N$_2$, and CO, and find total molecular Migdal rates competitive with those in semiconductors for the same target mass. We discuss how our results may be extended to more realistic targets comprised of larger molecules which could be deployed at the kilogram scale.Comment: v1: 15+2 pages, 7 figure

Metal studies : une bibliographie

Datant de 2007, cette bibliographie est la première du genre spécifiquement dédiée aux « metal studies ». Agostini, R. (2002), « Chimere : Note Su Alcune Musiche (Im)Popolari Contemporanee », in D’Aamato, F. (dir.), Sound Tracks : Tracce, Convergenze e Scenari Degli Studi Musicali, Rome, Meltemi, p.97-125. Alarie, S., Brochu, S. (1996), « Audition de musique ‘Heavy Metal’ et déviance : un lien complexe », Revue internationale de criminologie et de police technique, n° XLIX, p.300-311. Alvsvåg..

Log-concavity, ultra-log-concavity, and a maximum entropy property of discrete compound Poisson measures

Sufficient conditions are developed, under which the compound Poisson distribution has maximal entropy within a natural class of probability measures on the nonnegative integers. Recently, one of the authors [O. Johnson, {\em Stoch. Proc. Appl.}, 2007] used a semigroup approach to show that the Poisson has maximal entropy among all ultra-log-concave distributions with fixed mean. We show via a non-trivial extension of this semigroup approach that the natural analog of the Poisson maximum entropy property remains valid if the compound Poisson distributions under consideration are log-concave, but that it fails in general. A parallel maximum entropy result is established for the family of compound binomial measures. Sufficient conditions for compound distributions to be log-concave are discussed and applications to combinatorics are examined; new bounds are derived on the entropy of the cardinality of a random independent set in a claw-free graph, and a connection is drawn to Mason's conjecture for matroids. The present results are primarily motivated by the desire to provide an information-theoretic foundation for compound Poisson approximation and associated limit theorems, analogous to the corresponding developments for the central limit theorem and for Poisson approximation. Our results also demonstrate new links between some probabilistic methods and the combinatorial notions of log-concavity and ultra-log-concavity, and they add to the growing body of work exploring the applications of maximum entropy characterizations to problems in discrete mathematics.Comment: 30 pages. This submission supersedes arXiv:0805.4112v1. Changes in v2: Updated references, typos correcte