Konstantinos Kravvaris

Area of research

Nuclear and High Energy Physics · Atomic and Molecular Physics, and Optics

Research interest

Research topics from publications: Study of Nuclear Clustering from an Ab Initio Perspective; Evolution of the N=20 and 28 shell gaps and two-particle-two-hole states in the FSU interaction; Structure of Cl38 and the quest for a comprehensive shell model interaction; Clustering in structure and reactions using configuration interaction techniques; Higher-spin structures inF21andNa25; Quest for superradiance in atomic nuclei; Analyzing powers and the role of multistep processes in the C12(Li7,t)O<mml:mprescr; Study of clustering in isotopes of beryllium; Radiative decay of neutron-unbound intruder states inO19; βdecay ofSi38,40(Tz=+</m. Representative work: We put forward a new ab initio approach that seamlessly bridges the structure, clustering, and reactions aspects of the nuclear quantum many-body problem. The configuration interaction technique combined with the resonating group method based on a harmonic oscillator basis allows us to treat the reaction and multiclustering dynamics in a translationally invariant way and preserve the Pauli principle. Our presentation includes studies of ^{8,10}Be and an exploration of 3α clustering in ^{12}C The connection between fundamental nucleon-nucleon forces and the observed many-body structure of nuclei is a main question of modern nuclear physics. Evolution of the mean field, inversion of traditional shell structures, and structure of high spin states in nuclei with extreme proton-to-neutron ratios are at the center of numerous recent experimental investigations targeting the matrix elements of the effective nuclear Hamiltonian that is responsible for these phenomena. The FSU spsdf p cross-shell interaction for the shell model was successfully fitted to a wide range of mostly intruder negative parity states of the sd shell nuclei. In this paper, we explore the evolution of nuclear struc