Research output: Contribution to journal › Conference article › peer-review
QED with heavy ions: On the way from strong to supercritical fields. / Shabaev, V. M.; Bondarev, A. I.; Glazov, D. A.; Kozhedub, Y. S.; Maltsev, I. A.; Malyshev, A. V.; Popov, R. V.; Tumakov, D. A.; Tupitsyn, I. I.
In: Proceedings of Science, Vol. 353, 052, 18.02.2020.Research output: Contribution to journal › Conference article › peer-review
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TY - JOUR
T1 - QED with heavy ions: On the way from strong to supercritical fields
AU - Shabaev, V. M.
AU - Bondarev, A. I.
AU - Glazov, D. A.
AU - Kozhedub, Y. S.
AU - Maltsev, I. A.
AU - Malyshev, A. V.
AU - Popov, R. V.
AU - Tumakov, D. A.
AU - Tupitsyn, I. I.
PY - 2020/2/18
Y1 - 2020/2/18
N2 - The current status of tests of quantum electrodynamics with heavy ions is reviewed. The theoretical predictions for the Lamb shift and the hyperfine splitting in heavy ions are compared with available experimental data. Recent achievements and future prospects in studies of the g factor with highly charged ions are also reported. These studies can provide precise determination of the fundamental constants and tests of QED within and beyond the Furry picture at the strong-coupling regime. Theoretical calculations of the electron-positron pair creation probabilities in low-energy heavy-ion collisions are also considered. Special attention is paid to tests of QED in supercritical-field regime, which can be accessed in slow collisions of two bare nuclei with the total charge number larger than the critical value, Zcrit ≈ 173. In the supercritical field, the initially neutral vacuum can spontaneously decay into the charged vacuum and two positrons. It is demonstrated that this fundamental phenomenon can be observed via impact-sensitive measurements of the pair-production probabilities.
AB - The current status of tests of quantum electrodynamics with heavy ions is reviewed. The theoretical predictions for the Lamb shift and the hyperfine splitting in heavy ions are compared with available experimental data. Recent achievements and future prospects in studies of the g factor with highly charged ions are also reported. These studies can provide precise determination of the fundamental constants and tests of QED within and beyond the Furry picture at the strong-coupling regime. Theoretical calculations of the electron-positron pair creation probabilities in low-energy heavy-ion collisions are also considered. Special attention is paid to tests of QED in supercritical-field regime, which can be accessed in slow collisions of two bare nuclei with the total charge number larger than the critical value, Zcrit ≈ 173. In the supercritical field, the initially neutral vacuum can spontaneously decay into the charged vacuum and two positrons. It is demonstrated that this fundamental phenomenon can be observed via impact-sensitive measurements of the pair-production probabilities.
KW - Electron-positron pair creation
KW - Fundamental constants
KW - Hyperfine splittings
KW - Precise determinations
KW - quantum electrodynamics
KW - Sensitive measurement
KW - Strong-coupling regime
KW - Theoretical calculations
UR - http://www.scopus.com/inward/record.url?scp=85081117050&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:85081117050
VL - 353
JO - Proceedings of Science
JF - Proceedings of Science
SN - 1824-8039
M1 - 052
T2 - 2019 International Conference on Precision Physics and Fundamental Physical Constants, FFK 2019
Y2 - 9 June 2019 through 14 June 2019
ER -
ID: 52336670