With ‘Regional Territorial Agendas’ towards territorial cohesion? The emergence of supra-regional coalitions in Europe and their future role in Cohesion Policy

This paper focuses on current trends of regionalisation with supra-regional coalitions emerging in Europe. In the context of further European integration and institutionalisation of cross-border cooperation, functional integration in cross-border areas is developing. By exploiting cross-border territorial capital these coalitions might contribute to the concept of territorial cohesion as stated and upgraded in the European Union’s Treaty of Lisbon. The paper considers the right scale for these emerging supra-regional coalitions and their implications for the European Spatial Development Policy. When elaborating on the right delineation of supra- or transnational regional coalitions and about policy options, ‘territorial knowledge’ on territorial specificities, territorial capital and development potential is urgently needed. In border regions this includes cross-border functional linkages and interdependencies. The paper highlights an enhanced framework condition for cross-border functional integration and gives examples of supra-regional coalitions emerging in Europe, especially along Germany’s borders. It shows the difficulties with cross-border data availability for delineation of supra-regional coalitions in Europe and discusses the implications for European Cohesion Policy

[Rezension zu:] Witte, Markus; Alkier, Stefan (Hrsg.): Die Griechen und der Vordere Orient. Beiträge zum Kultur- und Religionskontakt zwischen Griechenland und dem Vorderen Orient im 1. Jahrtausend v. Chr.. Göttingen: Vandenhoeck & Ruprecht 2003. ISBN: 3-525-53048-X; X, 135 S.

Rezension des Werkes: Titel: Die Griechen und der Vordere Orient. Beiträge zum Kultur- und Religionskontakt zwischen Griechenland und dem Vorderen Orient im 1. Jahrtausend v. Chr. Reihe: Orbis biblicus et orientalis 191 Herausgeber: Witte, Markus; Alkier, Stefan Ort: Göttingen Verlag: Vandenhoeck & Ruprecht Jahr: 2003 ISBN: 3-525-53048-X Umfang/Preis: X, 135 S.; € 38,90 Der Band "Die Griechen und der Vordere Orient" geht aus einem interdisziplinären Symposion hervor, welches die Projektgruppe "Altorientalisch-hellenistische Religionsgeschichte" der Johann-Wolfgang-Goethe Universität Frankfurt am Main im April 2002 abgehalten hat (S. VII). Vier der Vorträge sind hier abgedruckt und von den Herausgebern, Markus Witte und Stefan Alkier, im Vorwort hilfreicherweise kurz zusammenfasst. ..

Higgs-Yukawa model on the lattice

We present results from two projects on lattice calculations for the Higgs-Yukawa model. First we report progress on the search of first-order thermal phase transitions in the presence of a dimension-six operator, with the choices of bare couplings that lead to viable phenomenological predictions. In this project the simulations are performed using overlap fermions to implement the required chiral symmetry. Secondly, our study for applying finite-size scaling techniques near the Gaussian fixed point of the Higgs-Yukawa model is presented. We discuss the analytical formulae for the Higgs Yukawa model and show results for a first numerical study in the pure $O(4)$ scalar sector of the theory.Comment: 8 pages, 4 figures; Contribution to the proceedings of the 35th International Symposium on Lattice Field Theory, 18 - 24 June 2017, Granada, Spai

Systematic errors in extracting nucleon properties from lattice QCD

Form factors of the nucleon have been extracted from experiment with high precision. However, lattice calculations have failed so far to reproduce the observed dependence of form factors on the momentum transfer. We have embarked on a program to thoroughly investigate systematic effects in lattice calculation of the required three-point correlation functions. Here we focus on the possible contamination from higher excited states and present a method which is designed to suppress them. Its effectiveness is tested for several baryonic matrix elements, different lattice sizes and pion masses.Comment: 7 pages, 8 figure

Hadron-Hadron Interactions from Nf=2+1+1N_f=2+1+1 Lattice QCD: I=3/2I=3/2 πK\pi K Scattering Length

In this paper we report on results for the s-wave scattering length of the $\pi$-$K$ system in the $I=3/2$ channel from $N_f=2+1+1$ Lattice QCD. The calculation is based on gauge configurations generated by the European Twisted Mass Collaboration with pion masses ranging from about $230$ to $450\,\text{MeV}$ at three values of the lattice spacing. Our main result reads $M_{\pi}\,a_0^{3/2,\text{phys}} = -0.059(2)$. Using chiral perturbation theory we are also able to estimate $M_{\pi}\,a_0^{1/2,\text{phys}} = 0.163(3)$. The error includes statistical and systematic uncertainties, and for the latter in particular errors from the chiral and continuum extrapolations.Comment: 30 pages, 6 figures, 15 table

Scale setting via the \Omega\ baryon mass

We present the first results of an ongoing effort to determine the lattice scale on the N_f=2 CLS lattice ensembles via the mass of the \Omega\ baryon. Results from different methods are compared, and various sources of systematic uncertainty are discussed.Comment: 7 pages, 4 pdf figures; talk given at LATTICE 2011, XXIX International Symposium on Lattice Field Theory, July 11-16 2011, Squaw Valley, Lake Tahoe, Californi

Hadron-Hadron Interactions from Nf=2+1+1N_f=2+1+1 Lattice QCD: isospin-2 ππ\pi\pi scattering length

We present results for the $I=2$ $\pi\pi$ scattering length using $N_f=2+1+1$ twisted mass lattice QCD for three values of the lattice spacing and a range of pion mass values. Due to the use of Laplacian Heaviside smearing our statistical errors are reduced compared to previous lattice studies. A detailed investigation of systematic effects such as discretisation effects, volume effects, and pollution of excited and thermal states is performed. After extrapolation to the physical point using chiral perturbation theory at NLO we obtain $M_\pi a_0=-0.0442(2)_\mathrm{stat}(^{+4}_{-0})_\mathrm{sys}$.Comment: Edited for typos, overhauled figures, more detailed comparison to existing lattice result