Amplitudes, observables, and classical scattering
Amplitudes, observables, and classical scattering
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DOI:
10.1007/jhep02(2019)137
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发表时间:
2018-11
影响因子:
5.4
通讯作者:
D. Kosower;Ben Maybee;D. O’Connell
中科院分区:
文献类型:
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作者:
D. Kosower;Ben Maybee;D. O’Connell
We present a formalism for computing classically measurable quantities directly from on-shell quantum scattering amplitudes. We discuss the ingredients needed for obtaining the classical result, and show how to set up the calculation to derive the result efficiently. We do this without specializing to a specific theory. We study in detail two examples in electrodynamics: the momentum transfer in spinless scattering to next-to-leading order, and the momentum radiated to leading order.