TBA

Achieving a first-principles description of the interaction of nuclei with external probes is a fundamental, yet challenging, problem, that bears implications to our understanding of the internal structure of nuclei and of the nuclear matter equation of state.

In this talk, I will present developments in the coupled-cluster framework that enable us to determine the response of open-shell nuclei near magicity [1]. I will focus on electric dipole excitations and discuss predictions for the electric dipole polarizability and the photonuclear cross sections.

In the second part of the seminar, I will then discuss state-of-the-art predictions for the nuclear matter equation of state determined with a recently introduced Green’s function approach [2].

[1] F. Marino, F. Bonaiti, S. Bacca, G. Hagen, and G. R. Jansen, Structure and dynamics of open-shell nuclei from spherical coupled-cluster theory”, Phys. Rev. C 112, 014315 (2025).

[2] F. Marino, W. G. Jiang, and S. J. Novario, “Diagrammatic ab initio methods for infinite nuclear matter with modern chiral interactions”, Phys. Rev. C 110, 054322 (2024).

TBC

TBC

Understanding the computational complexity of quantum states is a central challenge in quantum many-body physics. In qubit systems, fermionic Gaussian states can be efficiently simulated on classical computers and thus provide a natural baseline for assessing quantum complexity. In this talk, based on [arXiv:2506.00116], I will briefly introduce the idea of magic state resource theories and then focus on a framework for quantifying fermionic magic resources, also known as fermionic non-Gaussianity. I will describe the algebraic structure of the fermionic commutant and introduce fermionic antiflatness (FAF)—an efficiently computable and experimentally accessible measure of non-Gaussianity with a clear physical interpretation in terms of Majorana fermion correlation functions. I will argue that FAF detects phase transitions, reveals universal features of critical points, and identifies special solvable points in many-body systems. Extending to out-of-equilibrium settings, I will show that fermionic magic resources proliferate in highly excited eigenstates, and I will describe the growth and saturation of FAF under ergodic dynamics, emphasizing how conservation laws and locality constrain the increase of non-Gaussianity during unitary evolution. The main goal of this talk is to present fermionic non-Gaussianity—alongside entanglement and non-stabilizerness—as a resource relevant not only for foundational studies but also for experimental platforms aiming at quantum advantage.

TBC