Reason for matter rather than antimatter?

[jcap]

At the end of the inflation period (if it occurred) the potential energy of the inflaton field decays into particle/antiparticle pairs.

When a particle/antiparticle pair is created each component of the total 4-momentum of the pair is zero. This must include the time component as well as the spatial components.

Thus one member of the pair travels forwards in time (the particle with positive time-momentum/energy) and the other travels backwards in time (the antiparticle with negative time-momentum/energy).

As we are made of particles going forwards in time could this be the reason why we only see particles in the universe?

 

[mfb]

When a particle/antiparticle pair is created each component of the total 4-momentum of the pair is zero.

That's not correct. The production needs at least twice the mass of the particles as energy, that is larger than zero.

Thus one member of the pair travels forwards in time (the particle with positive time-momentum/energy) and the other travels backwards in time (the antiparticle with negative time-momentum/energy).

Even if the above would be right that wouldn't be correct either. It would mean some particles have negative energy, which is not what we observe.

As we are made of particles going forwards in time could this be the reason why we only see particles in the universe?

No.

 

[jcap]

Using cosmological measurements the vacuum energy density is estimated to have an energy scale of $T=(\rho_{vac})^{1/4}=10^{-3}$ eV.

But as far as we know it could have had an energy scale in excess of $1.02$ MeV in which case pairs of electrons could be created spontaneously out of the vacuum.

I know that the vacuum energy density is constant but for the sake of argument assume that somehow in the distant past the vacuum had an effective local energy scale of $T=1.02$ MeV.

Now as far as I understand it the vacuum energy scale can be taken to be the zero-point of energy measurement.

Thus one could say that in the distant past electron pairs were created spontaneously out of zero energy.

In that case one electron has positive energy/time-momentum and travels forwards in time whereas the other electron has negative energy/time-momentum and travels backwards in time.

This would explain why, at the present time, we only see positive-energy primordial electrons and not negative-energy primordial electrons (positive-energy primordial positrons).

Would this make sense?

 

[RedOrb]

At the end of the inflation period (if it occurred) the potential energy of the inflaton field decays into particle/antiparticle pairs.

When a particle/antiparticle pair is created each component of the total 4-momentum of the pair is zero. This must include the time component as well as the spatial components.

Thus one member of the pair travels forwards in time (the particle with positive time-momentum/energy) and the other travels backwards in time (the antiparticle with negative time-momentum/energy).

As we are made of particles going forwards in time could this be the reason why we only see particles in the universe?

If we were made from antimatter, then we would refer to matter as antimatter. It's all about perspective

 

[PeterDonis]

as far as I understand it the vacuum energy scale can be taken to be the zero-point of energy measurement

No, it can't, not in this context.

Would this make sense?

No. It's personal speculation. Personal speculation is not allowed at PF. Thread closed.