-1

I know that time travelling backward particles are anti-matter particles but what about graviton time travelling backward?

Qmechanic
  • 220,844
Gourab
  • 23

1 Answers1

3

As far as we know nothing travels backwards in time so antiparticles are not particles travelling backwards in time. If you want to learn more about this it is discussed in the question Is anti-matter matter going backwards in time?

However an antiparticle does obey the same equations as a particle going backwards in time, so for example an electron moving backwards in time would behave like a positron. You ask what a graviton moving backwards in time would behave like, and the answer is a graviton. The graviton is its own antiparticle i.e. an antigraviton and graviton are the same particle, so a graviton moving backwards in time would just behave like a graviton. The same is true for the photon and the Higgs boson. All three particles are their own antiparticle.

John Rennie
  • 367,598