Nuclear Physics ++

Prof. Dr. Robert Roth
Institut für Kernphysik - Theoriezentrum
Schlossgartenstr. 2 - Gebäude S211
Welcome to the TNP++ web site. You will find information about the group, our research program, our teaching activities, and much more on these pages.
  • News on Medium-Mass Open-Shell Nuclei
    May 2022
    R. Roth
    In an international collaboration with researchers from France and other countries we have published two papers as part of a three-paper series on new many-body methods for open-shell medium-mass nuclei using our family of chiral NN+3N interactions up to N3LO. We use a new multi-reference formulation of many-body perturbation theory as well as the in-medium NCSM, which provides a comprehensive set of benchmark result. This work focuses on the neon isotopic chain, but both methods hold great potential for broad applications in the medium mass-regime. Moreover the result highlight the predicitve power of the chiral interactions we have developed. Have a look at the papers here and here or in the publications section.
  • Back to University
    March 2022
    R. Roth
    The summer semester 2022 is about to start and we are offering the Computational Physics lecture live, interactive, and in-person in the Uhrturm lecture hall. All the exercise classes will also take place in-person. You will find all the relevant information on the web page of the lecture. On top of this, our group is running two advanced lab couses (F-Praktikum) using the TURM(X) Observatory... one on photometry of exoplanet transits and short-period variable stars and a second one on solar physics and the observation of the solar atmosphere. Check out the web pages of the TURM Observatory for more details.
  • TU News Article on the TURM Observatory
    September 2021
    R. Roth
    The TU has published a nice news article on the TURM Observatory and our activities. Have a look at the main TU Darmstadt website. Some of our astro images have also been posted on the Instagram channel of the University.
  • LENPIC Paper on Applications of SMS Interactions
    June 2021
    R. Roth
    A new paper of the LENPIC collaboration on a broad range of many-body calculations using the new semilocal momentum-space (SMS) interactions with consistent NN and 3N forces up to N2LO has appeared in Phys. Rev. C and was selected as an Editors' suggestions. In addition to a wide range of results for few-body and p-shell nuclei, it also features a detailed discussion on Bayesian uncertainty quantification for different obervables. Have a look at the paper here or in the publications section.
  • Advanced Lab Course on Solar Physics
    April 2021
    R. Roth
    Starting this summer, we offer a new advanced lab course (Fortgeschrittenenpraktikum) on the "Physics of the Solar Atmosphere" -- our second one. Using the different telescopes of the TURM Observatory, the students oberve the sun in different wavelength windows, including narrowband observations tuned on specific atomic transitions. In addition to the study of atmospheric features, like sun spots and prominences, the students measure the limb darkening and the differential rotation of the sun. Due to the current restrictions at the TU, the lab course will be offered in a remote/digital format, i.e., the students operate the observatory from their computer at home. More information on our solar observations at TURM web page.
  • Precision Study of Magnetic Dipole Observables in Lithium-6
    March 2021
    R. Roth
    In a new publication in Physical Review Letters we present a joint experiment and theory work on magnetic dipole observables in Lithium-6. Both, the measurement at the S-DALINAC and the ab initio NCSM calculations aim for a much improved precision for determining the M1 transition strength between the excited 0+ state and the ground state. For the ab initio calculation this implies the use of two-body corrections to the M1 operator resulting from chiral effective field theory as well as a consistent treatment of this operator throughout the calculation. We find a remarkable agreement with experiment. You can find more information in the news piece at the TU Darmstadt web page.
All News