Universe Chrono (scene 2)This is as elegant I can make this story with the information actually available. As you will see, I had to add more parts for the chronology.
2) The very early universe,
10^-43 sec to 10^-36 sec. Starting from the Planck epoch until the cosmic inflation, or as some say, the first picosecond (10^−12 sec) of cosmic time (a picosecond is to one second as one second is to 31,710 years); this period is the domain of active theoretical research,
currently beyond the grasp of most experiments in particle physics but, evidently, not beyond the grasp of human mind. 1 picosecond is the time taken by light in a vacuum, to travel approximately 0.30 mm and it represents also
the half-life of a bottom quark; even though bottom quarks didn’t exist at the time.
At 10^-43 sec, it is exclusively “space”, which just appeared, that starts to expand at light-speed, meeting no resistance whatsoever since nothing else than that “expanding motion” exists at this time. The advent of space itself is due to the “bit less than light speed” of the “surface” particle projected from Planck’s epoch, called the neutrino. It’s a radiating epoch exclusively.
3) Cosmic inflation
10^-36 sec to 10^-32 sec This event is cause by the rapid introduction of the gluon particle, ejected from Planck’s “universe”, at 10^-36 sec. The gluon boson is a funny particle; it’s a “surface” particle with a “toward the center” topology and bosons with the same energy can occupy the same place in space. During this event, it has both its “mirror” surfaces “disjoined” by expansion. This produces Top and antiTop quarks with the two subsequent generations of quarks. All these sub-events expands existing space by a factor of the order of 10^26 over a lap time of 10^−36 to 10^−32 second. This event prepares the period of the quarks-gluons plasma.
3a) Chronological appearance of “real” particles: 1) Gluon -> 2) Top quark -> 3) Gamma photon -> 4) Z boson -> 5) W boson -> 6) Bottom quark -> 7) Tau (electron) -> 8) Charm quark -> 9) Muon (electron) -> 10) Strange Quark -> 11) Down quark -> 12) Up quark -> 13) electron. Neutrinos simply adapt themselves to the electronic particle they travel with. The sum of the volume of all those particles participate in inflating the “altered space” (inside the space delimited by the gluon) of the universe, while the rest of space keeps on expanding.
3b) this inflation period produces all three generations of quarks and leptons. Surprisingly, researchers investigate the “inflaton decay” during this period, when nobody knows what an inflaton is. “-Say; what are you doing? –I’m catching “mook-mook” flies. –What’s a “mook-mook flie? –I don’t know; I never caught any yet.”
3b1) Top quarks production causes gamma rays around them, then they decay in two more generations of quarks which adapt to the gradually decreasing energy density of their environment. This is when our universe becomes electromagnetic.
3b2) Colliding gamma rays produces the three generations of leptons which also adapt to their environment’s density.
4) At the end of inflation. Reheating period
10^-32 and lasted until 10^-6 sec.At 10^-32 sec, starts what is called the
reheating period when the third generation of inflation particles swims into a hot, thermal quarks-gluons plasma. The quarks-gluons plasma composes all of “altered space” of the universe; the rest is still “flat” electromagnetic space expanding. Note: There’s something about this event that we’ll have to look into later.
Quarks are now gradually bound into hadrons, including neutrons and protons. Of the hadrons, protons are stable. All free hadrons except the proton (and antiproton) are unstable, but in the laps of time involved here, we can consider that the neutron, with his life-span of 15 minutes, as being stable since the universe is not even 1 second old yet. This period was followed by the
Hadron period.
5) The hadron period
10^-6 sec and lasted until 1 second. During this period, all free particles and anti-particles annihilated. I mention only
free elementary particles because we know that antimatter, in the form of anti-atoms,
is one of the most difficult materials to produce. Individual antimatter particles, however,
are commonly produced by particle accelerators and in some types of radioactive decay. So if we suppose that once quarks and antiquarks are protected inside a Neutron (which is neutral), and Neutrons started being produced at the beginning of 10^-6 sec, we can suggest that only the “free particles” could annihilate while colliding.
On the other hand, as we already saw, in 1956 was discovered that the radioactive decay of a nucleus (
where stands a Neutron, Proton do not decay) is more likely to produce a
left-handed electron than a right-handed one; so there’s a good possibility that the original particle “source” of radioactive decay (beta decay of the neutron) is more likely to have the same asymmetry
in being produce with opposite helicity (right-handed neutrons) than its opposite particle (left-handed neutron).
If so, at the end of the hadron period, free particles had disappear leaving the surviving surplus of protected right-handed neutrons by themselves. With this scenario,
there’s no need of a surplus of matter over anti-matter; but it will take another 15 minutes before a proton appears. So what? I’m trying to save humanity here; because if there’s no surplus of matter over anti-matter and they all annihilate, we will never exist.
In the following experience:
http://neutrino.physics.wisc.edu/teachi ... 285652.pdfWe read (last page):
“
There seems to be a mysterious preference for a positive sign to the asymmetry. That is, neutrons with spins polarized along the direction of motion (right-handed) tend to be scattered more readily than neutrons with opposite polarization. In fact, in the case of 232Th, all seven observed asymmetries showed this preference.”
So there’s definitely
an asymmetry observed in regard to neutrons and proton particles. This asymmetry might explain matter over anti-matter…maybe.
In fact, the idea of “negative matter” appeared in past theories of matter that have now been abandoned. The modern theory of antimatter began in 1928, with a paper by Paul Dirac. Dirac realised that his relativistic version of the Schrödinger wave equation for electrons predicted the possibility of
anti-electrons (positrons). And since an electron is an “elementary particle”, its equivalent would be the quark (and anti-quark) and not the baryon (and anti-baryon). Since at the time, scientists thought that baryons where elementary particles, they made the wrong equivalence. But that doesn’t change the fact that hadrons annihilated with anti-hadrons with the possible exception of the right-handed neutrons and, maybe, the same kind of protons.
We can add the information that the neutron-proton ratio was set by Standard Model physics
before the nucleosynthesis era, essentially within the first 1-second after the Big Bang. At times much earlier than 1 sec, these reactions were fast and
maintained the n/p ratio close to 1:1. As the temperature dropped, the equilibrium shifted in favour of protons due to their slightly lower mass, and the n/p ratio smoothly decreased.
During the 1970s, there was a major puzzle in that the density of baryons as calculated by Big Bang nucleosynthesis was much less than the observed mass of the universe based on measurements of galaxy rotation curves and galaxy cluster dynamics. This puzzle was resolved in large part by postulating the existence of dark matter. But the solution doesn’t really stands and the problem is in the actual interpretation of Einstein gravity.
6) The lepton epoch
1 sec to 10 sec. During the lepton epoch the temperature of the universe was still high enough to create lepton/anti-lepton pairs, so leptons and anti-leptons were in thermal equilibrium. Personally I don’t think that it was temperature that “created” lepton pairs. I think it was the decreasing density of the environment that provoked it. Decreasing temperature was only a consequence of the decreasing density of energy provoked by expansion within “flat” space. So “altered space” had to adapt particles that appeared inside itself to this overall decreasing density. Approximately 10 seconds after the Big Bang the temperature of the universe had fallen to the point where lepton/anti-lepton pairs were no longer created. Most leptons and anti-leptons were then eliminated in annihilation reactions, leaving a small residue of leptons. So now, officially, we find that there was
two annihilation periods (I have serious doubts).
The mass of the universe was then
dominated by photons as it entered the following photon epoch. But photons don’t have mass; so tell me; what is that “mass of the universe” that comes from nowhere at this moment? Was there any previous mention that the universe had mass? Up until now, only particles have “mass energy”. Why insert “mass-universe” in this description at this point? Is it to freely give mass to the universe? That would be a great “farce”; since the universe
is all that exists and we know that
massless particles exist. So why the universe itself, that we find “flat”, should be considered as having mass, if part of it is massless? I’m a “two brown eyes man standing”; which doesn’t mean that I’m a “two brown eyes standing”.
7) The photon epoch
10 seconds after Big bang.It started after most leptons and anti-leptons were annihilated at the end of the lepton epoch, about 10 seconds after the Big Bang. Atomic nuclei were created in the process of nucleosynthesis which occurred during the first few minutes of the photon epoch (new stable atomic nuclei results by adding a Proton and a Neutron to the previous stable nucleus; but that is not the process of their production. In reality, existing elements “fuse” than expel whatever energy that is in surplus to produce new elements).
For the remainder of the photon epoch the universe contained a hot dense plasma of nuclei, electrons and photons that lasted until 380,000 tears after the Big bang. The temperature of the universe fell to the point where nuclei could combine with electrons to create neutral atoms. As a result, photons no longer interacted frequently with matter, the universe became transparent and the cosmic microwave background radiation was manifested.
7a) Primordial nucleosynthesis has taken place in the interval from
roughly 10 seconds to 20 minutes after the Big Bang; which gives enough time to our “surviving” right-handed neutrons to transform into protons by ejecting an electron, thus creating hydrogen atoms of 1 proton + 1 electron (if so, this changes the epoch of Primordial nucleosynthesis which would have started at 15 minutes instead of 10 seconds or it was an added event). The fusion of nuclei occurred between
[u]roughly[/u] 10 seconds to 20 minutes after the Big Bang; and is calculated to be responsible for the formation of most of the universe's helium as the isotope normal form of helium-4 (2 protons + 2 neutrons + 2 electrons), along with small amounts of the hydrogen isotope deuterium (1 proton + 1 neutron + 1 electron), the helium isotope helium-3 (2 protons + 1 neutron + 2 electrons), and a very small amount of the lithium isotope lithium-7 (7Li). Essentially all of the elements that are heavier than lithium were created much later, by stellar nucleosynthesis in evolving and exploding stars.
Note: An isotope is an element that has 1 additional neutron, than the number of positive protons “needed” to equilibrate with the number of negative electrons; which makes an isotope unstable. Except for the helium 3, which is the only stable element that has more protons than neutrons; normally a stable element has the same amount of protons than neutrons.
The present measurement of helium-4 indicates good agreement, and yet better agreement for helium-3.
But for lithium-7, there is a significant discrepancy between BBN and WMAP/Planck, and the abundance derived from Population II stars. The discrepancy is a factor of 2.4―4.3
below the theoretically predicted value and is considered a problem for the original models.
Sorry to leave you with a problem, but you cannot ask me to solve all of them. On the other hand, establishing the surplus of matter over antimatter on a “surviving” neutron, might solve that “below value” observed.