title: Ð­ÑÑÐµÐºÑ Ð°ÐºÑÐ¸Ð¾Ð½Ð½Ð¾Ð³Ð¾ Ð¾Ð±Ð¼ÐµÐ½Ð° Ð² ÑÐ½ÐµÑÐ³Ð¸Ñ Ð»Ð¸ÑÐ¸Ð¹-Ð¿Ð¾Ð´Ð¾Ð±Ð½ÑÑ Ð¸Ð¾Ð½Ð¾Ð²
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: The effect of axion exchange on the energy of lithium-like ions
Creators: name: ÐÐ±Ð´ÑÐ»Ð»Ð¸Ð½, Ð Ð¸Ð½Ð°Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: Ð°ÐºÑÐ¸Ð¾Ð½
ÑÐ¸Ð·Ð¸ÐºÐ° ÑÐ°ÑÑÐ¸Ñ
ÑÑÐ½Ð´Ð°Ð¼ÐµÐ½ÑÐ°Ð»ÑÐ½ÑÐµ Ð²Ð·Ð°Ð¸Ð¼Ð¾Ð´ÐµÐ¹ÑÑÐ²Ð¸Ñ
Ð¼Ð½Ð¾Ð³Ð¾Ð·Ð°ÑÑÐ´Ð½ÑÐµ Ð¸Ð¾Ð½Ñ
Ð¿ÑÐ¾Ð¿Ð°Ð³Ð°ÑÐ¾Ñ
Ð¿ÑÐ¸Ð²ÐµÐ´ÐµÐ½Ð½ÑÐ¹ Ð¼Ð°ÑÑÐ¸ÑÐ½ÑÐ¹ ÑÐ»ÐµÐ¼ÐµÐ½Ñ
ÑÐ²ÑÐ·Ð°Ð½Ð½ÑÐµ ÑÐ¾ÑÑÐ¾ÑÐ½Ð¸Ñ Ð² ÐºÐ²Ð°Ð½ÑÐ¾Ð²Ð¾Ð¹ ÑÐµÐ¾ÑÐ¸Ð¸
axion
particle physics
fundamental interactions
multi-charged ions
propagator
reduced matrix element
bound states in quantum theory

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description: The subject of the graduate qualification work is âThe effect of axion exchangeÂ  on the energy of lithium-like ionsâ. Axions arise in the context of solving the strong CP - problem in the PecceiQuinn (PQ) theory, where an additional global U(1) symmetry is introduced in the SMÂ  QCD Lagrangian and is spontaneously broken, leading to the appearance of aÂ  pseudoscalar pseudo-Nambu-Goldstone boson known as the axion. The dark matterÂ  problem is another important challenge in modern physics, and its composition remainsÂ  uncertain. Axions stand out among several potential candidates for cold dark matter.Â  The role of the axion in solving the strong CP problem and its connection to dark matterÂ  make it an interesting object of study. This study examines the contribution of axion interaction to the energyÂ  transitions of lithium-like ions. Precision atomic spectroscopy methods have provenÂ  exceptionally effective for testing the Standard Model and detecting deviations fromÂ  its various modifications. Axion exchange can cause shifts in energy levels in theÂ  compounds under consideration. This study involves measuring these energy shifts.Â  The data obtained will help establish constraints on the axion interaction constant. In our work, a universal expression for the axion reduced matrix element hasÂ  been obtained. This matrix element is similar to the Breit part of the photon matrixÂ  element, which leads to the investigation of systems where the Breit contribution isÂ  prominently expressed.