Quick Question about anti-particles.

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SUMMARY

Anti-particles possess positive energy and mass, contrary to the misconception that they have negative kinetic energy or imaginary velocities. This discussion clarifies that while anti-particles do have opposite charge compared to their corresponding particles, their velocities are real and measurable. The assertion that anti-particles exhibit negative kinetic energy is definitively incorrect.

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mr-tom
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Is it true that they have negative kinetic energy; wouldn't this mean that they have imaginary velocities? :confused:

I'm sure I've read this somewhere but I just need to confirm if it's true or not.
 
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No, it's not true. They have positive energy and mass and real velocities.
 
Oh...damn
 
They have opposite charge though
 

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