products. The solar system moves through the ISM and collects dust particles. A

pioneering work at TU Munich, using accelerator mass spectrometry (AMS), found an extraterrestrial radioactive

Within an international collaboration we demonstrated recently that indeed multiple supernova explosions happened in our galactic neighbourhood within the last 10 million years and left their fingerprint on Earth.

Still unknown is the astrophysical site where the heaviest elements are made in

nature. Low concentrations measured for interstellar

I will present new results for both

However, within the product basis of two-orbital states, the resulting matrix of the corresponding BSE eigenvalue problem can be solved numerically efficient only for matrix sizes up to 100.00-150.000. As an alternative approach, we have exploited a real time evolution of orbitals. Applying an infinitely short electric field in time and then following the evolution of the electron orbitals and the evolution of the dipole moments, the long wavelength response function is obtained by the Fourier transformation of the time evolved dipole moments.

In the context of time-dependent denstiy functional theory, this time evolution method is equivalent to the Casida approach. The latter one yields an algebraic eigenvalue problem, formally very similar to that of the Bethe-Salpeter equation. We compare the results and performance of these two approaches for the projector augmented wave method. To allow for large time steps and still rely on a simple difference scheme to solve the differential equation, we correct for the errors in the frequency domain, using a simple analytic equation. In general, we find that both approaches yield virtually indistinguishable results. For standard density functionals, the time evolution (TE) approach is, with respect to the computational performance, clearly superior compared to the solution of the Casida equation. However, for functionals including nonlocal exchange, the direct solution of the Casida equation is usually much more efficient, even though it scales less beneficial with system size.]]>

In the present talk, a review of manifestations of the electron-phonon coupling in strontium titanate is given. We are particularly focused on our recent theoretical studies of the many-polaron optical conductivity of doped SrTiO

After an introduction to gravitational waves and their effect on space-time I will explain the principle of interferometric gravitational wave detection. I will present advanced interferometer noise-reduction techniques and detector sensitivities. Finally, I will touch upon the current status of the field, including plans for spaceborne detectors.]]>