#+DESC: My random thoughts on Positron, time and negative energy
#+INCLUDE: ../../thoughts.org
*** I was thinking ... :Physics:Thoughts:
Since [[https://en.wikipedia.org/wiki/Positron][Positron]] has a negative energy according to [[https://en.wikipedia.org/wiki/Paul_Dirac][Dirac]] and it can be interpreted as an
[[https://en.wikipedia.org/wiki/Electron][Electron]] going back in time, what would happen to the [[https://en.wikipedia.org/wiki/Entropy][entropy]] of a system made out of
anti-matter?
Positron is the counterpart or the anti-particle of Electron, it has the same mass but the opposite
electric charge and negative energy. According to [[https://en.wikipedia.org/wiki/Richard_Feynman][Feynman]] we can think of Positron as an Electron
moving backward in time. Or we can think that Electron and Positron are the same thing, an Electron
that is bouncing forward in time and backward again. Bouncing between an Electron and Positron
characteristics. Anyway, according to the [[https://en.wikipedia.org/wiki/General_relativity][general relativity]], time is relative and not absolute and
in spacetime. But another way of thinking about time in my head is entropy. According to the
[[https://en.wikipedia.org/wiki/Second_law_of_thermodynamics][second law of thermodynamics]] entropy of system increase overtime (to put it simply). Therefore,
future is the time with more entropy than today or simply the movement vector of time is in the same
direction as the entropy vector in our perception of time.
So, If Positron is moving back in time, does it mean that Positron's relative vector of time is
pointing the opposite direction of the entropy vector thus, entropy decreases relative to Positron's
time ??? If there's a universe made out of anti-matter, would it be just the past relative to present of
our matter based universe ???
"As always these thoughts baffles me. I have to look into it."
