© 2015.This document a59Summary of the discussions and conclusions following from Dark Matter @ LHC 2014, held at Merton College, Oxford, on September 25-27, 2014. outlines a set of simplified models for dark matter and its interactions with Standard Model particles. It is intended to summarize the main characteristics that these simplified models have when applied to dark matter searches at the LHC, and to provide a number of useful expressions for reference. The list of models includes both s-channel and (...) t-channel scenarios. For s-channel, spin-0 and spin-1 mediations are discussed, and also realizations where the Higgs particle provides a portal between the dark and visible sectors. The guiding principles underpinning the proposed simplified models are spelled out, and some suggestions for implementation are presented. (shrink)

Although much progress has been made toward the United Nations' Millennium Development Goals which have sought to reduce global poverty, the lack of access to clean water and improved sanitation, the desired MDG outcomes remain distant goals. Climate change and altered precipitation patterns, increasing population pressures resulting in growing consumption and demand for both industry and agriculture, and pollution of water sources, will place additional stresses on water quality and supply and further jeopardize attainment of MDGs. The following discussion highlights (...) some of the issues and constraints to achieving safe water and sanitation by noting the complexity of the issue. It then briefly considers options for overcoming this complexity. (shrink)

An appropriate kind of curved Hilbert space is developed in such a manner that it admits operators of $\mathcal{C}$ - and $\mathfrak{D}$ -differentiation, which are the analogues of the familiar covariant and D-differentiation available in a manifold. These tools are then employed to shed light on the space-time structure of Quantum Mechanics, from the points of view of the Feynman ‘path integral’ and of canonical quantisation. (The latter contains, as a special case, quantisation in arbitrary curvilinear coordinates when space is (...) flat.) The influence of curvature is emphasised throughout, with an illustration provided by the Aharonov-Bohm effect. (shrink)

A brief statement of medieval linguistic analysis as found chiefly in the works of Thomas Aquinas. A thin survey of contemporary analysis is offered in order to contrast the purported acceptance of analysis as the end of philosophy with Thomas' use of analysis as method. Unfortunately, most of the constructive work in language analysis during the past ten years is not considered. The brevity of the text precludes persuasive treatment; yet the book succeeds in its expressed purpose of sketching some (...) chief differences between the medieval and contemporary approaches in the hope that the confrontation of these currents will bring to the fore the analytic work of Aquinas himself.--D. P. B. (shrink)

[D. H. Mellor] Kant's claim that our knowledge of time is transcendental in his sense, while false of time itself, is true of tenses, i.e. of the locations of events and other temporal entities in McTaggart's A series. This fact can easily, and I think only, be explained by taking time itself to be real but tenseless. /// [J. R. Lucas] Mellor's argument from Kant fails. The difficulties in his first Antinomy are due to topological confusions, not the tensed nature (...) of time. Nor are McTaggart' s difficulties due to the tensed nature of time. The ego-centricity of tensed discourse is an essential feature of communication between selves, each of whom refers himself as 'I', and is required for talking about time as well as experience and agency. Arguments based on the Special Theory are misconceived. Some rest on a confused notion of 'topological simultaneity'. In the General Theory a cosmic time is defined, as also in quantum mechanics, where a natural present is defined by a unique hyperplane of collapse into eigen-ness. (shrink)

This paper analyzes several properties of infima in Dn, the n-r.e. degrees. We first show that, for every n> 1, there are n-r.e. degrees a, b, and c, and an -r.e. degree x such that a < x < b, c and, in Dn, b c = a. We also prove a related result, namely that there are two d.r.e. degrees that form a minimal pair in Dn, for each n < ω, but that do not form a minimal pair (...) in Dω. Next, we show that every low r.e. degree branches in the d.r.e. degrees. This result does not extend to the low2 r.e. degrees. We also construct a non-low r.e. degree a such that every r.e. degree b a branches in the d.r.e. degrees. Finally we prove that the nonbranching degrees are downward dense in the d.r.e. degrees. (shrink)

Das »Richtige und das Gute« (1930), das ethische Hauptwerk W. D. Ross’, enthält eine Vielzahl wichtiger moralphilosophischer Thesen und Argumente, die bis in die Gegenwart kontrovers diskutiert werden. Im Mittelpunkt steht seine pluralistische Deontologie, der zufolge sich die richtige Handlung aus einer Abwägung der in der jeweiligen Situation relevanten und unableitbaren Prima-facie-Pflichten ergibt, von denen nur ein Teil auf die Optimierung der Handlungsfolgen bezogen ist. Diese Deontologie wurde zu einem modernen Klassiker unter den normativen ethischen Theorien. Darüber hinaus stellt Ross’ (...) These, dass moralische Intuitionen eine Quelle selbstevidenten Wissens sein können, einen wichtigen Referenzpunkt in Debatten um den erkenntnistheoretischen Fundamentalismus dar. Auch für die Handlungstheorie liefert Ross einflussreiche Argumente, wenn er die Ansicht vertritt, dass Pflichten nie ein bestimmtes Motiv des Handelnden zum Gegenstand haben können. Eine zentrale Stellung nimmt für Ross die Güterlehre ein, in welcher er von vier Grundgütern, Tugend, Wissen, Lust und Gerechtigkeit, ausgeht. Wurde Ross in den ersten Jahrzehnten des 20. Jahrhunderts im damaligen Großbritannien als ein herausragender Ethiker – einer der bedeutendsten des Jahrhunderts, auf Augenhöhe mit G.E. Moore – angesehen, wandelte sich das Meinungsbild in den folgenden Jahrzehnten unter dem Einfluss besonders des Logischen Positivismus und der Philosophie Wittgensteins. In den letzten Jahrzehnten ist jedoch wieder ein wachsendes Interesse an Ross’ Ethik festzustellen. Dabei wird »Das Richtige und das Gute« bisweilen sogar mit der »Nikomachischen Ethik«, Kants »Grundlegung« und Humes »Untersuchung über die Prinzipien der Moral« verglichen. (shrink)

My review of Cornelius Castoriadis' book Crossroads in the Labyrinth ended with the apt reference, I now see, to the emperor being naked. In Joel Whitebook's second review, largely irrelevant to my criticisms of Castoriadis, he fears, though he doesn't know me personally, that only the lack of psychological counseling can explain my uncontrolled anger against Castoriadis. Let me dignify his long distance psychoanalysis by passing over it in silence. Silence is also the best remedy for Whitebook's transcendental deduction that (...) I have a “pluralistic, localistic, discontinuous ontology.” Even if I knew what that was I find it amazing that he located it in a 10 page review. Perhaps Whitebook just “feels” the presence of this ontology along with evidence of my mental problems. (shrink)

The group of Dialectical Theology (also known as Neo-Orthodoxy) included some of the most well-known theologians of the 20th century – Karl Barth, Rudolf Bultmann, Friedrich Gogarten, Eduard Thurneysen, Georg Merz und Emil Brunner. In the summer of 1922 they founded the journal Zwischen den Zeiten, which launched Dialectical Theology as the most influential avant-garde movement in Protestantism during the Weimar Republic. Due to internal strife and theological disagreements, the group began to lose strength in the early 1930s and eventually (...) split up and ceased publishing Zwischen den Zeiten in 1933. The individual members later became fierce critics of each other’s theological works. Gogarten and Barth became arch enemies during the so-called “church struggle” (Kirchenkampf), and Bultmann and Barth became each other’s nemesis in the Federal Republic of Germany.In this article I examine the rise and fall of this movement. I argue that the concept “generation” was central to the early self-understanding and selfjustification of the group. It allowed the group to forge an alliance and oppose an antagonistic group of influential theologians. The claim to speak up for a young generation of theologians and pastors – in opposition to an older, liberal generation – became the rallying cry for Dialectical Theology. Further, I argue that conferences, not only the theological writings, played a central, constitutive role in establishing the group as a theological movement. It was at conferences that the members of Dialectical Theology could challenge the older generation and assert their own theological stance. Instead of merely concentrating on the published theological writings of each of the members, I thus argue that one must additionally focus on the applied concepts and the role of conferences to understand the history of Dialectical Theology. It is only when we include these additional contexts that we understand how Dialectical Theology was able to be launched and sustained as a theological movement despite the irreconcilable differences amongst the members. (shrink)