Review of the Letters in EChAYa magazine, No. 4 of 2023

"Letters in the "Physics of Elementary Particles and Atomic Nucleus" magazine, it is short — "Letters in EChAYa", are published by OIYAI. Articles containing results of original theoretical, pilot, scientific and technical, methodical and applied researches are published in the magazine. The contents of published articles are defined by scope of scientific researches in OIYAI: theoretical physics, physics of elementary particles, relativistic nuclear physics, physics of an atomic nucleus and the related questions of the general physics, neutron physics, physics of the condensed environments, the physicist of the low...