In this chapter, we considered the evolution of a free particle wave packet: i.e

Question

In this chapter, we considered the evolution of a free particle wave packet: i.e., its propagation and spreading with time. Let's see what happens when we try to apply these ideas to a (rather large) macroscopic particle. Consider the planet Mars as a particle, the motion of which is to he described by a quantum mechanical wave packet. Suppose that at t = 0 (the birth of the universe) the width of the packet was 0.01m-a ridiculously small number on an astrophysical scale. Now, neglecting the gravitational held of the sun, calculate the increase in the width of this packet from its birth (about 5 billion years ago) to the present.

Explanation / Answer

Width can be calculated by using distances.

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