(The Loan Shark)
An unusual track was found in a cloud chamber
That Carl Anderson was using
To watch the trajectories of cosmic rays
Streaming in from space.
The track was like that of an electron—
Except that it curved backwards
Under the influence of a magnetic field.
It was the positron, now used in the PET.
A particle and its antiparticle annihilate,
Giving back, in the process, the energy it took
To create them in the first place.
Do they live on borrowed time and energy,
A creation ‘ex nihilo’ all over the universe?
Can they sneak out of the vacuum
So long as they snuck back in again
Before you noticed?
“What is the point?”
Thought Richard Fenyman,
“Created and annihilated,
Annihilated and created—
What a waste of time.”
They come and go like dreams,
The lighter ones, like electrons,
Popping out more often.
They are the ghosts of the yet unborn.
The road from ‘nothing’ to something
Goes in both directions.
With enough energy they can become real.
The so-called ‘vacuum’ is creative.
The field fluctuates this way and that,
But, on average, the net energy is ‘zero’.
The once melted vacuum fell and froze,
Gaining structure,
Such as when water becomes ice.


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