Negative Probability: Is It Possible?

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SUMMARY

The discussion centers on the concepts of negative probability and negative energy photons, distinguishing between mathematical and physical interpretations. It asserts that, by definition, probability cannot be negative, while negative energy photons are a topic of ongoing debate in physics. Paul Dirac's 1942 paper, "The Physical Interpretation of Quantum Mechanics," introduced these concepts, suggesting that negative energies and probabilities are mathematically valid, akin to negative monetary values. The conversation highlights the complexity of these ideas within quantum mechanics.

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sairajagopal
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Are there any negative probability or negative energy photons?
 
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Those are two completely different problems. The first question "is there negative probability" is a math problem and easily answered- by the definition of "probability" a probability must be non-negative. The second question "are there negative energy photons" is a physics problem and I will leave that to a physicist to answer.
 
the first one also related to physics, In 1942, Paul Dirac wrote a paper: "The Physical Interpretation of Quantum Mechanics" where he introduced the concept of negative energies and negative probabilities:

"Negative energies and probabilities should not be considered as nonsense. They are well-defined concepts mathematically, like a negative of money."
The idea of negative probabilities later got increased attention in physics and particularly in quantum mechanics

my question is whether there is a chance of negative energies and probabilities of a photon
 

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