- #1
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I am reading a textbook quantum physics by stephen gasiorowicz. And he defines a wavefunction in this form,
$$Ψ(x,t)=\int_{-∞}^{∞}A(k)e^{i:(kx-ωt)}dk$$
I did not understand why its a function of ##k## or why even we are taking integral with respect to ##k## ? Is ##k## actually means momentum somehow ? Or what's the importance of ##k## since we the wavefunction is actually a function of ##x## and ##t##.
$$Ψ(x,t)=\int_{-∞}^{∞}A(k)e^{i:(kx-ωt)}dk$$
I did not understand why its a function of ##k## or why even we are taking integral with respect to ##k## ? Is ##k## actually means momentum somehow ? Or what's the importance of ##k## since we the wavefunction is actually a function of ##x## and ##t##.