Abstract
In this work the \(e^{+}e^{-}\rightarrow l^{+}l^{-}\) scattering process is investigated. The cross-section is calculated considering three different effects: temperature, external magnetic field and chemical potential. The effect due to an external field is inserted into the problem through a redefinition of the fermionic field operator. Effects due to temperature and chemical potential are introduced using the Thermo Field Dynamics formalism.
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Acknowledgements
This work by A. F. S. is partially supported by National Council for Scientific and Technological Development - CNPq project No. 313,400/2020–2. D. S. C. thanks CAPES for financial support.
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Cabral, D.S., Santos, A.F. \(e^{+}e^{-}\rightarrow l^{+}l^{-}\) scattering at finite temperature in the presence of a classical background magnetic field. Eur. Phys. J. Plus 139, 190 (2024). https://doi.org/10.1140/epjp/s13360-024-04975-w
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DOI: https://doi.org/10.1140/epjp/s13360-024-04975-w