Negative Probability: Is It Possible?

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Negative probability is defined mathematically as non-negative, making its existence impossible. In contrast, the concept of negative energy photons is a physics issue that remains open to interpretation. Paul Dirac's 1942 paper introduced negative energies and probabilities as mathematically valid concepts, likening them to negative amounts of money. The discussion highlights the distinction between mathematical definitions and physical interpretations, particularly in quantum mechanics. The potential for negative energies and probabilities in photons continues to be a topic of interest in theoretical physics.
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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