Seyffart’s Directory of Drug Dosage in Kidney Disease By Günte Seyffart Dustri-Verlag Dr. Karl Feistle, 2011 870 pp, hardcover, US$135.00 ISBN 9783871854002

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The In-Medium Similarity Renormalization Group: A Novel Ab Initio Method for Nuclei

We present a comprehensive review of the In-Medium Similarity Renormalization Group (IM-SRG), a novel ab inito method for nuclei. The IM-SRG employs a continuous unitary transformation of the many-body Hamiltonian to decouple the ground state from all excitations, thereby solving the many-body problem. Starting from a pedagogical introduction of the underlying concepts, the IM-SRG flow equations are developed for systems with and without explicit spherical symmetry. We study different IM-SRG generators that achieve the desired decoupling, and how they affect the details of the IM-SRG flow. Based on calculations of closed-shell nuclei, we assess possible truncations for closing the system of flow equations in practical applications, as well as choices of the reference state. We discuss the issue of center-of-mass factorization and demonstrate that the IM-SRG ground-state wave function exhibits an approximate decoupling of intrinsic and center-of-mass degrees of freedom, similar to Coupled Cluster (CC) wave functions. To put the IM-SRG in context with other many-body methods, in particular many-body perturbation theory and non-perturbative approaches like CC, a detailed perturbative analysis of the IM-SRG flow equations is carried out. We conclude with a discussion of ongoing developments, including IM-SRG calculations with three-nucleon forces, the multi-reference IM-SRG for open-shell nuclei, first non-perturbative derivations of shell- model interactions, and the consistent evolution of operators in the IM-SRG. We dedicate this review to the memory of Gerry Brown, one of the pioneers of many-body calculations of nuclei.Comment: 92 pages, 33 figures, to appear in Physics Report

THE ADMINISTRATIVE CRIME, ITS CREATION AND PUNISHMENT BY ADMINISTRATIVE AGENCIES

The application of the penal sanction in the field of administrative law involves mainly three problems: (1) the constitutionality of a statute which authorizes an administrative agency to issue rules and regulations enforceable by punishment and thus to create certain elements of crime; (2) the constitutionality of a statute which authorizes an administrative agency to create the penalty for the violation of its rules and regulations; and (3) the constitutionality of a statute which authorizes an administrative agency to impose a penalty upon the delinquent. Even if the first problem can be answered in the affirmative, two questions still remain: (a) what is the standard under which the legislature may authorize an administrative agency to create elements of crime? and (b) how far will the courts go in their scrutiny as to whether or not the administrative agency is authorized to issue the rules or regulations in a case where they are enforceable by punishment