Abstract: Experimental investigations of the three-nucleon (3N) systems at intermediate energies keeps attracting attention due to sensitivity of the observables to subtle effects of the dynamics beyond the pairwise nucleon-nucleon force, in particular the so-called three nucleon force (3NF). The data for nucleon-deuteron collisions are also considered as a tool for fine-tuning of the 3N Hamiltonian parameters in Chiral EFT. Deuteron breakup induced by proton leads to a three-body final state, characterized by a continuum of kinematic configurations. This enables detailed studies of contributions to the reaction dynamics (3NF, Coulomb interaction, relativistic effects) in the areas of their greatest visibility, and to fit the ChEFT parameters to a large and diverse database. Since several years the d-p breakup reaction studies utilize large acceptance detectors, e.g. SALAD and BINA at KVI Groningen and CCB PAS Krakow, GeWall and WASA at FZ-Juelich. Differential cross section and, in some cases, vector and tensor analyzing powers were measured over a significant part of the reaction phase space. The results of such experiments conducted over a wide range of (intermediate) beam energies will be discussed. Plans for extending the (still rather scarce) database of polarization observables for the d-p breakup reaction with an upgraded experimental setup at CCB PAS Krakow will supplement the presentation.

Abstract: In my review, I will discuss selected examples of current research in the ab-initio few-nucleon physics. In addition to advances in the standard goal of this field — the understanding the nuclear two- and three-body potentials — I will give examples of recent research that goes beyond, to some extent, this topic. Specifically, I will focus on the quantum entanglement, uncertainty quantification, applications beyond three-nucleon systems, and beyond the low-energy regime.

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Abstract: The Standard Model is the most concise approach possible for deriving the physical laws of matter particles that interact with one another, while obeying the laws of Special Relativity. These interactions require a renormalization procedure that we briefly explain. It appears however that the Standard Model cannot be generalised directly if one tries to include the gravitational force. However there may exist an indirect approach by assuming that all matter exists of Standard Model fields that interact with black holes. This can be done while respecting the laws of General Relativity, and unitarity, a new demand that yields results different from more usual approaches.

Abstract: We show that if a massive body is put in a quantum superposition of spatially separated states, the mere presence of a black hole in the vicinity of the body will eventually destroy the coherence of the superposition. This occurs because, in effect, the gravitational field of the body radiates soft gravitons into the black hole, allowing the black hole to harvest "which path'' information about the superposition. A similar effect occurs for quantum superpositions of electrically charged bodies. The effect is very closely related to the memory effect and infrared divergences at null infinity.