What is the relationship between negative energy, negative mass and antiparticles? I have read some articles but I am still confused. Does negative mass exist? Does negative energy exist with the exception of the Kasimir effect which I understand. Are antiparticles really only the negatice energy solution of the quantum field equations of particles or is the CPT-symetry the major reason for their existence? As far as I understood, antimatter has positive energy and thus created only with normal matter, so why e.g. does the positron has a negative energy in the Dirac-equation? Does the Heisenberg uncertainty principle tell us that there can be negative energy exist for short time? What physical implication has that? Since energy is linked by the Einstein equation with mass, does a negative energy density not imply negative mass density? In the frame CPT, antiparticles can be seen as normal particles moving backwards in time in a mirrored space and charge reversed. What does this have for implications for entropy(adsbygoogle = window.adsbygoogle || []).push({});

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# I Relationship between negative mass, energy and antimatter

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