Editing Wave packet (section)

=== Wave packets and quantum scattering ===
Particle interactions are called [[scattering]] in physics; the wave packet concept plays an important role in [[Lippmann–Schwinger equation#Creating wavepackets|quantum scattering approaches]]. A monochromatic (single momentum) source produces convergence difficulties in the scattering models.<ref name="Newton">{{Cite book |last=Newton |first=Roger G. |title=Scattering theory of waves and particles |date=1982 |publisher=Springer |isbn=978-0-387-10950-3 |edition=2|series=Texts and monographs in physics |location=New York, Heidelberg, Berlin}}</ref>{{rp|150}} Scattering problems also have classical limits. Whenever the scattering target (for example an atom) has a size much smaller than wave packet, the center of the wave packet follows scattering classical trajectories. In other cases, the wave packet distorts and scatters as it interacts with the target.<ref name="Susskind-Friedman">{{Cite book |last1=Susskind |first1=Leonard |title=Quantum mechanics: the theoretical minimum; [what you need to know to start doing physics] |last2=Friedman |first2=Art |last3=Susskind |first3=Leonard |date=2014 |publisher=Basic Books |isbn=978-0-465-08061-8 |series=The theoretical minimum / Leonard Susskind and George Hrabovsky |location=New York, NY}}</ref>{{rp|295}}