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Combined two-loop self-energy corrections at finite and zero temperatures. / Залялютдинов, Тимур Амирович; Соловьев, Дмитрий Анатольевич.
в: Physical Review A - Atomic, Molecular, and Optical Physics, Том 108, № 4, 042801, 06.10.2023.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Combined two-loop self-energy corrections at finite and zero temperatures
AU - Залялютдинов, Тимур Амирович
AU - Соловьев, Дмитрий Анатольевич
PY - 2023/10/6
Y1 - 2023/10/6
N2 - In this paper we investigate higher-order corrections to the energies of bound states in hydrogen subjected to the external blackbody radiation field. In particular, within the framework of thermal quantum electrodynamics and the S-matrix approach we analyze the combined type of two-loop self-energy corrections, including one zero-vacuum and one loop at finite temperature. By utilizing the method of dimensional regularization, we derive closed analytical expressions for the energy shifts of atomic levels. Our numerical calculations demonstrate that even at room temperature these corrections can be significant for excited states, reaching the magnitude of the thermally induced Stark contribution.
AB - In this paper we investigate higher-order corrections to the energies of bound states in hydrogen subjected to the external blackbody radiation field. In particular, within the framework of thermal quantum electrodynamics and the S-matrix approach we analyze the combined type of two-loop self-energy corrections, including one zero-vacuum and one loop at finite temperature. By utilizing the method of dimensional regularization, we derive closed analytical expressions for the energy shifts of atomic levels. Our numerical calculations demonstrate that even at room temperature these corrections can be significant for excited states, reaching the magnitude of the thermally induced Stark contribution.
KW - higher-order corrections
KW - external blackbody radiation field
KW - thermal quantum electrodynamics
KW - two-loop self-energy correction
UR - https://www.mendeley.com/catalogue/46131f58-e74e-3815-85a4-ff4a44781ceb/
U2 - https://link.aps.org/doi/10.1103/PhysRevA.108.042801
DO - https://link.aps.org/doi/10.1103/PhysRevA.108.042801
M3 - Article
VL - 108
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
SN - 1050-2947
IS - 4
M1 - 042801
ER -
ID: 115008924