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actionintegral
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Since antiparticles have reversed proper time, can I conclude that all invariants are reversed for antiparticles?
What exactly do you mean by this? I can't see anything which would imply such an assertion.actionintegral said:Since antiparticles have reversed proper time,..
Gokul43201 said:No, I think the OP is confused about CPT symmetry, or something along those lines - maybe even just the definition of the antiparticle of a given particle.
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Thank you for pointing out my confusion. Now maybe I can ask my question more intelligently.
I am referring specifically to Feynman's theory of positrons - that positrons they move backwards in time. Now that statement only makes sense if I am referring to the proper time of the positron. I also read that positrons have negative energy which I assume means negative rest mass.
I was referred to CPT symmetry but I am still reading about that.
I don't think Feynman said that positrons move back in time. I believe what he said was that one could view a positron as an electron which is moving backwards in time.actionintegral said:I am referring specifically to Feynman's theory of positrons - that positrons they move backwards in time. Now that statement only makes sense if I am referring to the proper time of the positron.
pmb_phy said:I don't think Feynman said that positrons move back in time.
Pete
Sure. PM your email address to me and I'll send it to you within a day or so (since I'll have to find it and then scan it and convert it to PDF).actionintegral said:There is an old paper by Bondi about negative mass. Since I only have negative money, can someone send it to me?
pmb_phy said:Sure. PM your email address to me and I'll send it to you within a day or so (since I'll have to find it and then scan it and convert it to PDF).
Pete
Invariant quantities for antimatter refer to physical properties that remain constant regardless of the reference frame or observer. These quantities are essential for understanding the behavior and interactions of antimatter particles.
Invariant quantities for antimatter are measured through a variety of experiments, including particle accelerators and collision experiments. Scientists also use mathematical equations and theories, such as the Standard Model, to calculate and predict these quantities.
Some examples of invariant quantities for antimatter include mass, energy, charge, and spin. These quantities are essential for understanding the fundamental properties of antimatter particles and their interactions with other particles.
Understanding invariant quantities for antimatter is crucial for furthering our understanding of the universe and the laws of physics. It also has practical applications, such as in medical imaging and nuclear energy, where antimatter interactions play a significant role.
No, according to the current understanding of physics, invariant quantities are the same for both matter and antimatter. This is known as the principle of CPT symmetry, which states that the laws of physics are the same for particles and their antiparticles.