Was energy already quantized 10^-43 seconds after the Big Bang?

[CarlosLara]

Good evening. I am wondering if energy has always been quantized. I read that the shortest time after the Big Bang (the time it took for gravity to separate first) was 10^-43 seconds. At these moments of earliest symmetry breaking, was energy already discrete, or did quantum mechanics emerge some time afterwards?

Thank you in advance.

 

[Chronos]

This should probably be moved to the quantum physics forum, but, the short answer is after T = 0 + Planck time, the rules of quantum physics appear to be in charge of the universe.

 

[CarlosLara]

This should probably be moved to the quantum physics forum, but, the short answer is after T = 0 + Planck time, the rules of quantum physics appear to be in charge of the universe.

Which particles existed at the Planck time?