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Seminar / Mathematical Physics /</div>
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Speaker: Shih-Yuin Lin (National Changhua University of Education, Taiwan)</div>
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Title: Relativistic Single-Electron Wavepackets in Quantum Electromagnetic Fields</div>
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Abstract: </div>
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Conventional formulation of QED since the 50s works very well for stationary states and for scattering problems, but with newly arisen challenges from the 80s on, where real time evolution of particles in a nonequilibrium setting are required, and quantum features
such as coherence, dissipation, correlation and entanglement in a system interacting with its quantum field environment are sought after, new ways to formulate QED suitable for these purposes beckon. In this talk we present a linearized effective theory using
a Gaussian wavepacket description of a charged relativistic particle coupled to quantum electromagnetic fields to study the interplay between single electrons and quantum fields in free space, at a scale well below the Schwinger limit. Applications include
the blurring of interference lines in electron microscopes, and the identification of the Unruh effect in the quantum deviations from a classical electron trajectory. --- Based on work in https://arxiv.org/abs/2401.15404 (published in JHEP) and the recent
eprint https://arxiv.org/abs/2604.09456</div>
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When: Wednesday, 27 May 2026, 11:00</div>
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Where: Physics B17</div>
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<span style="color: rgb(0, 0, 0);">| Jorma Louko</span></p>
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<span style="color: rgb(0, 0, 0);">| School of Mathematical Sciences</span></p>
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<span style="color: rgb(0, 0, 0);">| University of Nottingham Tel: +44 115 95 14942</span></p>
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<span style="color: rgb(0, 0, 0);">| Nottingham NG7 2RD jorma.louko@nottingham.ac.uk</span></p>
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<span style="color: rgb(0, 0, 0);">| United Kingdom www.nottingham.ac.uk/mathematics</span></p>
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