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EuCd_{2}As_{2} has attracted considerable interest as one of the few magnetic Weyl semimetal candidate materials, although recently there have been emerging reports that claim it to have a semiconducting electronic structure. To resolve this debate, we established the growth of n-type EuCd_{2}As_{2} crystals, to directly visualize the nature of the conduction band using angle resolve photoemission spectroscopy (ARPES). We show that La-doping leads to n-type transport signatures in both the thermopower and Hall effect measurements, in crystals with doping levels at 2 - 6 x 10^{17} e^{-} cm^{-3}. Both p-type and n-type doped samples exhibit antiferromagnetic ordering at 9 K. ARPES experiments at 6 K clearly show the presence of the conduction band minimum at 0.8 eV above the valence band maximum, which is further corroborated by the observation of a 0.71 - 0.72 eV band gap in room temperature diffuse reflectance absorbance measurements. Together these findings unambiguously show that EuCd_{2}As_{2} is indeed a semiconductor with a substantial band gap and not a topological semimetal.

PtTe$_2$ and PdTe$_2$ are among the first transition metal dichalcogenides that were predicted to host type-II Dirac fermions, exotic particles prohibited in free space. These materials are layered and air-stable, which makes them top candidates for technological applications that take advantage of their anisotropic magnetotransport properties. Here, we provide a detailed characterization of the electronic structure of PtTe$_2$ and PdTe$_2$ using Angle Resolved Photoemission Spectroscopy (ARPES) and Density Functional Theory (DFT) calculations, unveiling a new three-dimensional dispersion in these materials. Through the use of circularly polarized light, we report a different behavior of such dispersion in PdTe$_2$ compared to PtTe$_2$, that we relate to a symmetry analysis of the dipole matrix element. Such analysis reveals a link between the observed circular dichroism and the different momentum-dependent terms in the dispersion of these two compounds, despite their close similarity in crystal structure. Additionally, our data shows a clear difference in the circular dichroic signal for the type-II Dirac cones characteristic of these materials, compared to their topologically protected surface states. Our work provides a useful reference for the ARPES characterization of other transition metal dichalcogenides with topological properties and illustrates the use of circular dichroism as a guide to identify the topological character of two otherwise equivalent band dispersions, and to recognize different attributes in the band structure of similar materials., Comment: 14 pages, 9 figures

Topologically protected magnon surface states are highly desirable as an ideal platform to engineer low-dissipation spintronics devices. However, theoretical prediction of topological magnons in strongly correlated materials proves to be challenging because the ab initio density functional theory calculations fail to reliably predict magnetic interactions in correlated materials. Here, we present a symmetry-based approach, which predicts topological magnons in magnetically ordered crystals, upon applying external perturbations such as magnetic/electric fields and/or mechanical strains. We apply this approach to carry out an efficient search for magnetic materials in the Bilbao Crystallographic Server, where, among 198 compounds with an over 300-K transition temperature, we identify 12 magnetic insulators that support room-temperature topological magnons. They feature Weyl magnons with surface magnon arcs and magnon axion insulators with either chiral surface or hinge magnon modes, offering a route to realize energy-efficient devices based on protected surface magnons., Comment: Main text: 9 pages with 1 table + 3 figures. Supplemental materials: 1496 pages with 9 figures and 1k+ tables

This report summarizes the activities of the SM and NLO Multileg Working Group of the Workshop "Physics at TeV Colliders", Les Houches, France 8-26 June, 2009., Comment: 169 pages, Report of the SM and NLO Multileg Working Group for the Workshop "Physics at TeV Colliders", Les Houches, France 8-26 June, 2009

Many highly developed Monte Carlo tools for the evaluation of cross sections based on tree matrix elements exist and are used by experimental collaborations in high energy physics. As the evaluation of one-loop matrix elements has recently been undergoing enormous progress, the combination of one-loop matrix elements with existing Monte Carlo tools is on the horizon. This would lead to phenomenological predictions at the next-to-leading order level. This note summarises the discussion of the next-to-leading order multi-leg (NLM) working group on this issue which has been taking place during the workshop on Physics at TeV colliders at Les Houches, France, in June 2009. The result is a proposal for a standard interface between Monte Carlo tools and one-loop matrix element programs., Comment: Dedicated to the memory of, and in tribute to, Thomas Binoth, who led the effort to develop this proposal for Les Houches 2009. Minor changes

This paper considers the options for Quebec in a globalizing economy. Quebec has not only been recognized as being distinct in the Canadian political context, but it is also seen as having a distinct business culture. As Quebec looks to its expanding cultural and economic role within larger zones such as NAFTA and the FTAA, a certain tension has arisen between the forces of cultural and economic expansion on the one hand and those of protectionism on the other. The question is whether Quebec should promote its distinctive language and culture or try to protect it, and are these options mutually exclusive. It is argued that there are indications that the debate has been shifting in favor of the forces favoring vigorous promotion of Quebecois culture as a means of both reinforcing Quebec's national identity and pride in its culture and hastening Quebec's move toward a model of a post-national society. Increasingly, Quebec sees itself developing under the aegis of a supranational authority. Clearly, it will--in collaboration with other partners including the Canadian Federal Government--develop new structures at the level of government, business, and civil society to manage issues of cultural and linguistic identity in a globalized context of diversity. (Contains 24 references.) (Author/KFT)

The impact of Puerto Rico's and Quebec's laws on official bilingualism of translation and interpreting services is examined. In the case of Puerto Rico, public policy concerning the use of Spanish and English since 1899 is reviewed, focusing on early laws and those passed since 1991. The status of the translation profession is discussed, and it is noted that translators and interpreters are being afforded a significant role in the social class responsible for economic development. This situation is couched in a linguistic context of popular resistance to learning English and legal responsibility to provide translation services for those who need them. The need for qualified translators is highlighted. A more accelerated movement toward professionalization of translation and interpretation is seen in Quebec, Canada. Parallels and differences in the situations are outlined, the primary differences being earlier official acceptance of bilingualism, official requirement that language services be provided, and development of training and licensing. It is proposed that Quebec's experience and policies could serve as a model for Puerto Rico. Contains 32 references and 54 notes. (MSE)