On the influence of the cosmological constant on gravitational lensing in small systems

The cosmological constant Lambda affects gravitational lensing phenomena. The contribution of Lambda to the observable angular positions of multiple images and to their amplification and time delay is here computed through a study in the weak deflection limit of the equations of motion in the Schwarzschild-de Sitter metric. Due to Lambda the unresolved images are slightly demagnified, the radius of the Einstein ring decreases and the time delay increases. The effect is however negligible for near lenses. In the case of null cosmological constant, we provide some updated results on lensing by a Schwarzschild black hole.Comment: 8 pages, 1 figure; v2: extended discussion on the lens equation, references added, results unchanged, in press on PR

Professor Emeritus Harry Arthurs’ memoir, “Connecting the Dots: The Life of an Academic Lawyer,” has just been published

Harry W. Arthurs is a name held in high esteem by labour lawyers and academics throughout the world. Although many are familiar with Arthurs\u27s contributions and accomplishments, few are acquainted with the man himself, or how he came to be one of the most influential figures in Canadian law and legal education. In Connecting the Dots Arthurs recounts his adventures in academe and the people, principles, ideas, motivations, and circumstances that have shaped his thinking and his career. The memoir offers intimate recollections and observations, beginning with the celebrated ancestors who influenced Arthurs\u27s upbringing and education. It then sweeps through his career as an architect of important reforms in legal education and explores his research as a trailblazing commentator on the legal profession. Arthurs analyzes his experiences as a legal theorist and historian and his pivotal role as a discordant voice in debates over constitutional and administrative law. Along the way, he muses on the intellectual projects he embraced or set in motion, the institutional reforms he advocated, the public policies he recommended, and how they fared long term. Framed with commentary on the historical context that shaped each decade of his career and punctuated by moments of personal reflection, Connecting the Dots is a humorous, frank, and fearless account of the rise and fall of Canadian labour law from the man who was at the centre of it all

Professor Emeritus Harry Arthurs’ memoir, “Connecting the Dots: The Life of an Academic Lawyer,” has just been published

Harry W. Arthurs is a name held in high esteem by labour lawyers and academics throughout the world. Although many are familiar with Arthurs\u27s contributions and accomplishments, few are acquainted with the man himself, or how he came to be one of the most influential figures in Canadian law and legal education. In Connecting the Dots Arthurs recounts his adventures in academe and the people, principles, ideas, motivations, and circumstances that have shaped his thinking and his career. The memoir offers intimate recollections and observations, beginning with the celebrated ancestors who influenced Arthurs\u27s upbringing and education. It then sweeps through his career as an architect of important reforms in legal education and explores his research as a trailblazing commentator on the legal profession. Arthurs analyzes his experiences as a legal theorist and historian and his pivotal role as a discordant voice in debates over constitutional and administrative law. Along the way, he muses on the intellectual projects he embraced or set in motion, the institutional reforms he advocated, the public policies he recommended, and how they fared long term. Framed with commentary on the historical context that shaped each decade of his career and punctuated by moments of personal reflection, Connecting the Dots is a humorous, frank, and fearless account of the rise and fall of Canadian labour law from the man who was at the centre of it all

Information Sharing and Incentives in Organizations Information Sharing and Incentives in Organizations

Abstract We examine optimal information ‡ows between a manager and a worker who is in charge of evaluating a parameter of interest, e.g. the value of a project. The manager may possesses information about the parameter, and, if informed, may divulge her information to the worker. We show that information sharing may weaken the worker's incentives and that, consequently, the manager may …nd it optimal to conceal her information from the worker. Moreover, the manager faces a time-inconsistency problem, which leads her to conceal her information more often than she would if she could commit to an information sharing policy. We build on these results to address issues related to authority in organizations

New Physics at the Super Flavor Factory.

The sixth SuperB Workshop was convened in response to questions posed by the INFN Review Committee, evaluating the SuperB project at the request of INFN. The working groups addressed the capability of a high-luminosity flavor factory that can gather a data sample of 50 to 75 /ab in five years to elucidate New Physics phenomena unearthed at the LHC. This report summarizes the results of the Workshop

SuperB Progress Report: Detector

This report describes the present status of the detector design for SuperB. It is one of four separate progress reports that, taken collectively, describe progress made on the SuperB Project since the publication of the SuperB Conceptual Design Report in 2007 and the Proceedings of SuperB Workshop VI in Valencia in 2008