Existence of the D0-D4 Bound State: a detailed Proof

We consider the supersymmetric quantum mechanical system which is obtained by dimensionally reducing d=6, N=1 supersymmetric gauge theory with gauge group U(1) and a single charged hypermultiplet. Using the deformation method and ideas introduced by Porrati and Rozenberg, we present a detailed proof of the existence of a normalizable ground state for this system

Integration of production and financial models to analyse the financial impact of livestock diseases: a case study of Schmallenberg virus disease on British and French dairy farms

AIMS AND OBJECTIVES: The aim of the study was to investigate and compare the financial impact of Schmallenberg disease for different dairy production types in the United Kingdom and France. MATERIALS AND METHODS: Integrated production and financial models for dairy cattle were developed and applied to Schmallenberg virus (SBV) disease in a British and French context. The five main production systems that prevail in these two countries were considered. Their respective gross margins measuring the holding's profitability were calculated based on public benchmarking, literature and expert opinion data. A partial budget analysis was performed within each production model to estimate the impact of SBV in the systems modelled. Two disease scenarios were simulated: low impact and high impact. RESULTS: The model gross margin obtained per cow space and year ranged from £1014 to £1484 for the UK and from £1037 to £1890 for France depending on the production system considered. In the UK, the net SBV disease costs in £/cow space/year for an average dairy farm with 100 milking spaces were estimated between £16.3 and £51.4 in the high-impact scenario and between £8.2 and £25.9 in the low-impact scenario. For France, the net SBV disease costs in £/cow space/year ranged from £19.6 to £48.6 in the high-impact scenario and £9.7 to £22.8 in the low-impact scenario, respectively. CONCLUSION: The study illustrates how the combination of production and financial models allows assessing disease impact taking into account differing management and husbandry practices and associated price structures in the dairy sector. It supports decision-making of farmers and veterinarians who are considering disease control measures as it provides an approach to estimate baseline disease impact in common dairy production systems in the UK and France

Induced mass in N=2 super Yang-Mills theories

The masses of the matter fields of N=2 Super-Yang-Mills theories can be defined as parameters of deformed supersymmetry transformations. The formulation used involves central charges for the matter fields. The explicit form of the deformed supersymmetry transformations and of the invariant Lagrangian in presence of the gauge supermultiplet are constructed. This works generalizes a former one, due to the same authors, which presented the free matter case.Comment: 15 pages, Late

Uniqueness of the ground state in the Feshbach renormalization analysis

In the operator theoretic renormalization analysis introduced by Bach, Froehlich, and Sigal we prove uniqueness of the ground state.Comment: 10 page

Placebos in der Psychotherapieforschung – eine systematische Analyse am Beispiel der systematischen Desensibilisierung

Hintergrund: Die Voraussetzungen der randomisierten, Placebo-kontrollierten Evaluation - die Ununterscheidbarkeit der Therapiebedingungen für die Patienten und die Verblindung der Therapeuten - sind in der Psychotherapieforschung nicht uneingeschränkt gegeben. Das Ziel dieser qualitativen systematischen Übersichtsarbeit ist es, am Beispiel der systematischen Desensibilisierung (SD) die Vorgehensweisen zur Bestimmung der Behandlungsspezifität zu beschreiben und deren theoretische und praktische Implikationen zu diskutieren. Methodik: Auf der Basis einer systematischen Literaturrecherche in PsycINFO und PubMed für den Zeitraum von 1976-2015 wurden Psychotherapiestudien gesucht, in denen Patienten mit Angstsymptomen einer SD- oder Placebo-Gruppe zugewiesen und verglichen wurden. Nach Extraktion der gewählten Moderator-Variablen konnten 11 Studien eingeschlossen werden. Ergebnisse: Die Ergebnisse zu den spezifischen Effekten der SD waren nicht einheitlich. Eine durchgeführte Moderator-Analyse zeigte, dass der Nachweis spezifischer Effekte von der Glaubwürdigkeit des Placebos und dem dabei erlebten Ausmaß emotionaler Erfahrungen abhängig ist. Schlussfolgerung: Ob ein bestimmtes psychotherapeutisches Verfahren als spezifisch einzustufen ist, hängt von der Operationalisierung der Placebo-Kontrolle ab. Insbesondere bei SD scheint die Einschränkung des zu bearbeitenden Themas und in der Folge die Unterbindung der emotionalen Erfahrung des Patienten innerhalb der Kontrollbedingung eine Voraussetzung dafür zu sein, spezifische Effekte der SD zu finden