Half-life Expectations for Neutrinoless Double Beta Decay in Standard and Non-Standard Scenarios

We investigate the half-life expectations for neutrinoless double beta decay by applying statistical distributions of neutrino mixing observables, neutrino mass constraints from cosmology and nuclear matrix elements. The analysis is performed in the standard scenario of active Majorana neutrino exchange, when light sterile neutrinos are added, and within TeV-scale left-right symmetric frameworks. The latter two cases correspond to a modified phenomenology of double beta decay for a normal and inverted mass ordering, and thus different discovery potential for future experiments.Comment: 18 pages, 10 figures, and 4 table

Neutrinoless Double Beta Decay, the Inverted Hierarchy and Precision Determination of theta(12)

Ruling out the inverted neutrino hierarchy with neutrinoless double beta decay experiments is possible if a limit on the effective mass below the minimal theoretically possible value is reached. We stress that this lower limit depends strongly on the value of the solar neutrino mixing angle: it introduces an uncertainty of a factor of 2 within its current 3 sigma range. If an experiment is not background-free, a factor of two in effective mass corresponds to a combined factor of 16 improvement for the experimental parameters running time, detector mass, background level and energy resolution. Therefore, a more precise determination of theta(12) is crucial for the interpretation of experimental results and the evaluation of the potential and requirements for future experiments. We give the required half-lifes to exclude (and touch) the inverted hierarchy regime for all double beta decay isotopes with a Q-value above 2 MeV. The nuclear matrix elements from 6 different groups and, if available, their errors are used and compared. We carefully put the calculations on equal footing in what regards various convention issues. We also use our compilation of matrix elements to give the reachable values of the effective mass for a given half-life value.Comment: 26 pages, 6 figures. v2: error corrected (misprint in paper we took a value from), slightly modifying the result

Leptogenesis and low-energy CP violation in a type-II-dominated left-right seesaw model

We consider leptogenesis in a left-right-symmetric seesaw scenario in which neutrino mass generation and leptogenesis are dominated by the type-II seesaw term. Motivated by grand unification, we assume that the neutrino Dirac mass matrix is dominated by a single entry of the order of the top-quark mass, which leaves the low-energy phases of the lepton mixing matrix as the only sources of CP violation. Working in a regime where the triplet scalar predominantly decays into leptons, this results in a predictive scenario based on a minimal number of parameters. We perform a detailed analysis of the flavored Boltzmann equations within a revised density matrix framework and demonstrate that the observed baryon asymmetry can be successfully generated in this simple model. We point out that the significance of flavor effects is limited, and we discuss the implications for low-energy observables such as the Dirac CP phase and neutrinoless double beta decay.Comment: 40 pages, 9 figures, 3 tables; minor text revisions, new benchmark values, plots and results updated, matches published version in NP

Application of Lifetime Electronic Health Records: Are we ready yet?

Integrated care concepts can help to diminish demographic challenges. Therefore, the use of eHealth solutions is recognised as an efficient approach. Lifetime electronic health records (LEHRs) are expected to increase continuity, effectiveness, efficiency and thus quality of the care process. With respect to these benefits, an overarching implementation of LEHRs is desirable but non-existent. Hence, the aim of the article is to analyse the current LEHR implementation readiness of EU member states to derive implications for further LEHR research and development. Therefore, a case study on Denmark, Germany and Italy was conducted. The analysis shows that all countries fulfil the technical requirements but Denmark has great experiences and willingness to implement advanced eHealth measures like LEHRs. First Italian pilot projects are quite promising as well. The article paves the way for LEHR implementation and there with for integrated care

Ein Krisenmechanismus für die Eurozone

1. Auftrag und Eingrenzung – 2. Hintergrund – 3. Die wirtschaftliche Bedeutung des Krisenmechanismus für Deutschland und Europa – 4. Ein neuer Krisenmechanismus – 5. Die Stabilisierungswirkungen – 6. Ergänzender Reformbedarf – 7. Schlussbemerkungen

Heteronuclear molecules in an optical lattice: Theory and experiment

We study properties of two different atoms at a single optical lattice site at a heteronuclear atomic Feshbach resonance. We calculate the energy spectrum, the efficiency of rf association and the lifetime as a function of magnetic field and compare the results with the experimental data obtained for K-40 and Rb-87 [C. Ospelkaus et al., Phys. Rev. Lett. 97, 120402 (2006)]. We treat the interaction in terms of a regularized delta function pseudopotential and consider the general case of particles with different trap frequencies, where the usual approach of separating center-of-mass and relative motion fails. We develop an exact diagonalization approach to the coupling between center-of-mass and relative motion and numerically determine the spectrum of the system. At the same time, our approach allows us to treat the anharmonicity of the lattice potential exactly. Within the pseudopotential model, the center of the Feshbach resonance can be precisely determined from the experimental data.Comment: 9 pages, 7 figures, revised discussion of transfer efficienc

Vortices within vortices: hierarchical nature of vortex tubes in turbulence

The JHU turbulence database [1] can be used with a state of the art visualisation tool [2] to generate high quality fluid dynamics videos. In this work we investigate the classical idea that smaller structures in turbulent flows, while engaged in their own internal dynamics, are advected by the larger structures. They are not advected undistorted, however. We see instead that the small scale structures are sheared and twisted by the larger scales. This illuminates the basic mechanisms of the turbulent cascade.Comment: 2 pages, 1 low quality video, 1 high quality vide

Was kosten Eurobonds?

Aus Sicht der bonitätsschwachen Länder des Euroraums ist die Forderung nach Eurobonds verständlich. Denn die damit verbundene nominale Zinskonvergenz hätte den Effekt, dass die Zinsen der unsolideren Länder merklich sinken. Im Gegenzug müsste Deutschland, würde es in Zukunft Eurobonds statt z.B. Bundesanleihen begeben, mit deutlich höheren Zinskosten als bisher rechnen. Das ifo Ins­titut rät angesichts der zu erwartenden Mehrkosten von der Einführung von Eurobonds ab

Simulation Study of Al Channeling in 4H-SiC

Peer reviewe