Prospects for time-dependent asymmetries at LHCb

LHCb is already providing leading measurements of time-dependent CP asymmetries with 1 fb$^{-1}$ of data. With the LHCb detector, and further one with the LHCb upgrade, very high-precision time-dependent CP measurements are expected to stringently test the CKM paradigm and to the search for possible small NP effects. A review of the current precision and the prospects for these time-dependent quantities with the LHCb and LHCb upgraded detectors are summarised in this paper.Comment: Proceedings of the CKM 2012, the 7th International Workshop on the CKM Unitarity Triangle, University of Cincinnati, USA, 28th September - 2 October 201

Role of Fermion Exchanges in Statistical Signatures of Composite Bosons

We study statistical signatures of composite bosons made of two fermions using a new many-body approach. Extending number-states to composite bosons, two-particle correlations as well as the dispersion of the probability distribution are analyzed. We show that the particle composite nature reduces the anti-bunching effect predicted for elementary bosons. Furthermore, the probability distribution exhibits a dispersion which is greater for composite bosons than for elementary bosons. This dispersion corresponds to the one of sub-Poissonian processes, as for a quantum state, but, unlike its elementary boson counterpart, it is not minimum. In general, our work shows that it is necessary to take into account the Pauli exclusion principle which takes place between fermionic components of composite bosons - along the line here used - to possibly extract statistical properties in a precise way.Comment: 14 page

Memory, Tradition and Text: Uses of the Past in Early Christianity - Edited By Alan Kirk and Tom Thatcher [Review of the book \u3cem\u3eMemory, Tradition and Text: Uses of the Past in Early Christianity\u3c/em\u3e, by A. Kirk & T. Thatcher, Ed.]

The aim of this collection of essays is, at least in part, to remedy the lack of attention that studies of early Christianity have paid to recent developments, in the fields of sociology and anthropology, in the study of memory. An excellent introductory survey by Alan Kirk of recent developments in memory studies is followed by eleven essays applying some aspect of the approach to various texts or problems in the study of early Christianity, and then by responses by Werner Kelber and Barry Schwartz. While the various contributions interact in different ways with the relevant theories and models, all share an understanding of memory as a complex interaction between knowledge of the past and its appropriation in the present. Although the collection as a whole is strong, a few essays stand out: Richard Horsley’s “Prominent Patterns in the Social Memory of Jesus and Friends,” in which he locates possible continuity between Jesus and later literary traditions such as Q and Mark in general patterns of Israelite social memory; and Phillip Esler’s reading of the Israelite heroes presented in Heb 11. The insights generated by the application of memory studies to the study of early Christianity are welcome, and, as the editors suggest, long overdue

Cuatro Viajes en la Literatura del Antiguo Egypto [Review of the book \u3cem\u3eCuatro Viajes en la Literatura del Antiguo Egipto\u3c/em\u3e, by J. M. Galán]

In Cuatro Viajes en la Literatura del Antigua Egypto José M. Galán brings together four stories from Egyptian literature united by the motif of the journey into unknown or enemy land. The stories grouped in this volume are The Shipwrecked Sailor, The Tale of Sinuhe, The Doomed Prince and Report of Wenamun

Writing and Imitation: Greek Education in the Greco-Roman World

The imitation of a handful of accepted literary models lies at the core of the Greco-Roman educational process throughout all of its stages. While at the more advanced levels the relationship to models became more nuanced, the underlying principle remained the imitation of those authors who had achieved greatness. Quintilian explains the rationale as follows: For there can be no doubt that in art no small portion of our task lies in imitation, since although invention came first and is all-important, it is expedient to imitate whatever has been invented with success. And it is a universal rule of life that we should wish to copy what we approve in others. It is for this reason that boys copy the shapes of letters that they may learn to write, and that musicians take the voices of their teachers, painters the works of their predecessors, and peasants the principles of agriculture which have been proved in practice, as models for their imitation. (Inst. or. 10.2.1-2) The emphasis on the imitation of models does not stop with a student\u27s education. The primary and secondary stages of education were specifically designed to lay the groundwork for rhetorical training, where a would-be rhetor or writer would learn the subtle art of imitation more fully. Students approached what is essentially the same set of texts at all stages of their education, but in increasingly complex and nuanced ways. The end result was what might be thought of as a mimetic compositional ethos. As rhetors and writers began to practice their craft, the years of training and preparation created, as Ruth Webb puts it, certain modes of thinking about language, about the classical texts which served as models and about the relation to language in general. These modes of thinking are evident in the widespread imitation of literary models in the literature of the Hellenistic and Roman periods

Non-orthogonal Theory of Polarons and Application to Pyramidal Quantum Dots

We present a general theory for semiconductor polarons in the framework of the Froehlich interaction between electrons and phonons. The latter is investigated using non-commuting phonon creation/annihilation operators associated with a natural set of non-orthogonal modes. This setting proves effective for mathematical simplification and physical interpretation and reveals a nested coupling structure of the Froehlich interaction. The theory is non-perturbative and well adapted for strong electron-phonon coupling, such as found in quantum dot (QD) structures. For those particular structures we introduce a minimal model that allows the computation and qualitative prediction of the spectrum and geometry of polarons. The model uses a generic non-orthogonal polaron basis, baptized the "natural basis". Accidental and symmetry-related electronic degeneracies are studied in detail and are shown to generate unentangled zero-shift polarons, which we consistently eliminate. As a practical example, these developments are applied to realistic pyramidal GaAs QDs. The energy spectrum and the 3D-geometry of polarons are computed and analyzed, and prove that realistic pyramidal QDs clearly fall in the regime of strong coupling. Further investigation reveals an unexpected substructure of "weakly coupled strong coupling regimes", a concept originating from overlap considerations. Using Bennett's entanglement measure, we finally propose a heuristic quantification of the coupling strength in QDs.Comment: 17 pages, 11 figures, 3 table

[Review of the book \u3cem\u3eThe Reception of Luke and Acts in the Period Before Irenaeus: Looking for Luke in the Second Century\u3c/em\u3e, by A. Gregory]

In this book, a revision of the author\u27s 2001 Oxford dissertation, Andrew Gregory has set for himself the daunting task of determining when we can definitively say that the Gospel of Luke and the Acts of the Apostles are being used by later Christian authors. The greatest contribution of this book is that it treats in one study a broad range of texts and scholarly discussion on this question–according to the author, the first time this has been done