March 1, 2018 at 7:15 pm

INPP Seminar | Frontiers in Nuclear Structure Theory, March 20

The Institute of Nuclear and Particle Physics (INPP) presents Heiko Hergert, of NSCL, Michigan State University,  on “Frontiers in Nuclear Structure Theory”, on Tuesday, March 20, at 4 p.m. in Edwards Accelerator Lab, Roger W. Finlay Conference Room.

Heiko Hergert

Heiko Hergert

Abstract: Efforts to describe nuclear structure and dynamics from first principles have made phenomenal progress in recent  years. Exact methods for light nuclei are now able to include continuum degrees of freedom and treat structure and reactions on the same footing. Moreover, computationally efficient many-body methods like Coupled Cluster, Self-Consistent Greens Function theory, and the In-Medium Similarity Renormalization Group (IMSRG) are nowadays routinely applied for nuclei as heavy as the tin isotopes. These developments make it possible to confront modern nuclear interactions and electroweak operators that are rooted in Quantum Chromodynamics with a wealth of existing and forthcoming experimental data.

Focusing on the IMSRG as a representative example, I will present recent results for ground- and excited  state observables, and discuss their implications for many-body methods and interactions. I will then look ahead at efforts to refine the input interactions and currents, expand the capabilities for computing transitions and response functions, and develop computational tools that are necessary for a controlled description of heavy open-shell nuclei. These developments will allow us to support the experimental push towards exotic nuclei, e.g., by studying the evolution of nuclear properties from the proton to the neutron drip lines, and to contribute to major fundamental symmetry experiments like the search for neutrinoless double beta decay.

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