# New effect in wave-packet scatterings of quantum fields

@inproceedings{Ishikawa2021NewEI, title={New effect in wave-packet scatterings of quantum fields}, author={Kenzo Ishikawa and Kenji Nishiwaki and Kin-ya Oda}, year={2021} }

In a transition amplitude of wave-packets, e.g., that of the Φ → φφ decay process, there are in and out time boundaries for the initial Φ and ﬁnal φφ conﬁgurations, respectively, when the transition occurs in a ﬁnite time interval. In this Letter, we prove that the eﬀect of the in time boundary of the Φ → φφ decay emerges from the φφ → Φ → φφ scattering amplitude that does not include the time boundaries for φφ . This eﬀect has been overlooked in the standard plane-wave formulation and can…

## One Citation

A complete set of Lorentz-invariant wave packets and modified uncertainty relation

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We define a set of fully Lorentz-invariant wave packets and show that it spans the corresponding one-particle Hilbert subspace, and hence the whole Fock space as well, with a manifestly…

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