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An efficient numerical method for calculation of the effective stiffness tensor of 3D-elastic media with multiple interacting cracks is developed. A representative volume element (RVE) of the medium with a finite number of cracks is embedded into the background homogeneous medium. The presence of cracks outside of the RVE is accounted by placing the RVE into an effective external stress field. This field does not coincide with the external stress field applied to the cracked medium, and for construction of this field, a version of a self-consistent effective field method is proposed. The problem is reduced to a system of 2D-integral equations for the crack opening vectors inside the RVE. Discretization of these equations is performed by Gaussian approximation functions centered at a set of nodes uniformly distributed on crack surfaces. For such functions, construction of the matrix of the discretized problem is reduced to calculation of five standard 1-D integrals that can be tabulated. As a result, numerical integration is not necessary, and the matrix elements are calculated fast. Examples of various arrangements of planar cracks in isotropic elastic media are considered. The results are compared with numerical solutions and experimental data available in the literature. [ABSTRACT FROM AUTHOR]

The article discusses a research that investigates the contributions of large right-handed sneutrinos to lepton flavor violating (LFV) observables similar to u-3e or u-e conversion in nuclei in supersymmetric low-scale. Details about the impact on predictions for LFV results in supersymmetric low-scale seesaw models are noted. It discusses the need of an independent calculations to carefully revised the dramatic impact on low-scale seesaw models.

We present nonadiabatic, fully ab initio, systematic calculations of the 3pπ D ¹Πu+ level energies, A doublings, and absorption line intensities and widths for H2 and D2 even for those levels that are strongly predissociated. The multichannel quantum defect theory calculations are based on the latest quantum-chemical clamped-nuclei data of Wolniewicz and collaborators [L. Wolniewicz and G. Staszewska, J. Mol. Spectrosc. 220, 45 (2003); G. Staszewska and L. Wolniewicz, ibid. 212, 208 (2002)]. The theoretical values are compared with previously published data [ G. D. Dickenson, T. I. Ivanov, M. Roudjane, N. de Oliveira, D. Joyeux, L. Nahon, W.-Ü. L. Tchang-Brillet, M. Glass-Maujean, I. Haar, A. Ehresmann, and W Ubachs, J. Chem. Phys. 133, 144317 (2010); G. D. Dickenson, T. I. Ivanov, W. Ubachs, M. Roudjane, N. de Oliveira, D. Joyeux, L. Nahon, W.-Ü. L. Tchang-Brillet, M. Glass-Maujean, H. Schmoranzer, A. Knie, S. Kübler, and A. Ehresmann, Mol. Phys. 109, 2693 (2011)] and with absolute line intensity measurements. The overall agreement is very good. The enhanced precision of the calculations leads to additional assignments and to several corrections of previous literature data. [ABSTRACT FROM AUTHOR]

We present full quantum statistical energetics of some electron-light-nuclei systems. This is accomplished with the path-integral Monte Carlo method. The effects on energetics arising from the change in the nuclear mass are studied. The obtained results may serve as reference data for the multicomponent density functional theory calculations of light-nuclei systems. In addition, the results reported here will enable better fitting of today's electron-nuclear energy functionals, for which the description of light nuclei is most challenging in particular. [ABSTRACT FROM AUTHOR]

We have carried out calculations to search Borromean windows for the bound F and G states of the H+2 system, where the nuclei and the electrons interact through a screened Coulomb (Yukawa-type) potential. The bound F and G state energies for different values of the screening parameters are obtained using correlated exponential wave functions in the framework of the Ritz variational principle. The critical values of the screening parameters for the bound F and G states are reported for which the H+2 system is stable, while all the possible fragments are unbound; that is, it shows windows for Borromean binding. [ABSTRACT FROM AUTHOR]

We study the effects of temperature on finite nuclei [1] and look at nuclear deformation and pairing correlations in a self–consistent way. We include temperature in the the Dirac–Hartree–Bogoliubov (DHB) theory using the Matsubara formalism [2]. In order to simplify the calculation we exclude the Fock term and use a zero–range approximation to the relativistic pairing tensor to obtain pure proton–proton and neutron–neutron pairing. We use the Bonche et. al [3–5] vapor subtraction procedure to account for unbound states and remove long range Coulomb repulsion between the hot nucleus and gas, i.e, remove the contributions of the external gas. [Copyright &y& Elsevier]

While the equation of state (EOS) of symmetric nuclear matter (SNM) at suprasaturation densities has been relatively well constrained from heavy-ion collisions, the EOS of high-density neutron-rich matter is still largely uncertain due to the poorly known high-density behavior of the symmetry energy. Using the constraints on the EOS of SNM at suprasaturation densities from heavy-ion collisions together with the data of finite nuclei and the existence of 2 M⊙ neutron stars from electromagnetic observations, we show that the high-density symmetry energy cannot be too soft, which leads to lower bounds on dimensionless tidal deformability of Λ1.4≥193 and radius of R1.4≥11.1 km for 1.4 M⊙ neutron star. Furthermore, we find that the recent constraint of Λ1.4≤580 from the gravitational wave signal GW170817 detected from the binary neutron star merger by the LIGO and Virgo collaborations rules out too-stiff high-density symmetry energy, leading to an upper limit of R1.4≤13.3 km. All these terrestrial nuclear experiments and astrophysical observations based on strong, electromagnetic, and gravitational measurements together put stringent constraints on the high-density symmetry energy and the EOS of SNM, pure neutron matter, and neutron star matter. [ABSTRACT FROM AUTHOR]

Reports on experiments by researchers casting serious doubt on the existence of anomalons, atomic nuclei with an abnormally strong propensity to interact with other nuclei. Evidence for the existence of anomalons; Experiment by researchers of the University of California at Berkeley, California; View of Erwin M. Friedlander of the Lawrence Berkeley Laboratory validating the earlier experiments for anomalons.