Re: The Big-Bang Theory is flawed.

On 25 Jan, 21:35, carlip-nos...@xxxxxxxxxxxxxxxxxxx wrote:
Nick Keighley <nick_keighley_nos...@xxxxxxxxxxx> wrote:
On 20 Jan, 05:13, Prof Weird <pol...@xxxxxxxxxxxxxxxxxxxxx> wrote:

From 'Our Cosmic Origins : From the Big Bang to the Emergence of Life
and Intelligence' :

How can pure energy make matter?  It is an experiment that physicists
can easily make in large particle accelerators.  With enough energy, a
pair of particles of matter and antimatter is created, such as a quark-
antiquark pair.  The energy of the Big Bang was in the form of gamma
rays; while cooling down towards 10^13 Kelvin, these gamma rays
continued to make more matter-antimatter particles than matter-
antimatter collisions made gamma rays.  

sounds like perpectual motion...


Hence, during inflation, the
amount of matter and antimatter never stopped growing.

where did all the anti-matter go?  

I was more objecting to Prof Weird's simplistic explanation of how you
turn energy into mass. Without some other principle operating it just
converts straight back again!

That's currently a hot research topic (under the name "baryogenesis").
There's a fairly recent review athttp://arxiv.org/abs/hep-ph/0609145.

Sakharov pointed out in 1967 that to explain the observed asymmetry
between matter and antimatter, you need three features:

(1) A physical process that violates baryon number conservation.
(Baryon number is roughly the difference in the number of particles
and antiparticles; you need a process that changes this number.)

(2) Violation of CP invariance.  (CP is the symmetry between particles
and antiparticles; you need a process that can tell which is which.)

(3) Lack of thermal equilibrium.  (Otherwise any process that could
produce an imbalance would work in both directions, cancelling the
net effect.)

Condition (3) is easy:  the very early universe was far out of thermal
equilibrium.  Condition (2) is known to occur -- CP violation was
discovered experimentally in 1964 -- but we need to be sure it occurs
at a high enough rate.  That depends on exactly what process is
responsible for condition (1).

Condition (1), baryon number violation, is the open problem.  There
are known theoretical mechanisms within the Standard Model of
particle physics, but they are probably too weak -- they lead to
some excess of matter over antimatter, but not as much as we see.
On the other hand, we're fairly sure that the Standard Model is not
complete, and many "beyond the Standard Model" proposals contain
natural mechanisms for baryogenesis.  (Let me emphasize that these
are not put in by hand, but fall out naturally from models that are
built for completely different reasons.)

Which, if any, of these is correct?  We don't know yet.  We should
know a lot more once the Large Hadron Collider has collected some
data; ask again in four or five years.

I'll make a note in my diary!



.

Relevant Pages

  • Re: Capt kirk to really boldly go
    ... > was no upper limit to quantum sub micro based energy transference. ... accomplished through these points by using matter and muon waves. ... particles as they move from one geometry of creation to another. ... Hence matter muon wave coupling allows Man to experience ...
    (sci.physics)
  • Re: Capt kirk to really boldly go
    ... > was no upper limit to quantum sub micro based energy transference. ... accomplished through these points by using matter and muon waves. ... particles as they move from one geometry of creation to another. ... Hence matter muon wave coupling allows Man to experience ...
    (sci.physics.relativity)
  • MEaT: Matter Energy & Time
    ... Matter has a dual nature, it exists as particles or waves. ... Energy is either potential or kinetic which is real or imaginary, ...
    (sci.physics)
  • MEaT: Matter Energy and Time
    ... Matter has a dual nature, it exists as particles or waves. ... Energy is either potential or kinetic ...
    (sci.physics)
  • MEaT: Matter Energy & Time
    ... Matter has a dual nature, it exists as particles or waves. ... Energy is either potential or kinetic which is real or imaginary, ...
    (sci.physics.relativity)