John Mikes skrev:
  • 1.- Q: What are light and fermions?
  • A: Light is a fluctuation of closed strings of arbitrary sizes. Fermions are ends of open strings.
  • 2.- Q: Where do light and fermions come from?
  • A: Light and fermions come from the collective motions of string-like objects that form nets and fill our vacuum.
  • 3.- Q: Why do light and fermions exist?
  • A: Light and fermions exist because our vacuum is a quantum liquid of string-nets.
This is from the introduction of the URL so kindly provided by Torgny. It looks very interesting, a gteat idea indeed. I like better a 'liquid' of spacetime than a 'fabric'.

Xiao-Gang Wen looks like a very open-minded wise man.
I wonder if he made the circularity of his Q#1 and Q#3 deliberately? (if, of course, we include Q#2).
Originally - before reading Q#3 I wanted to ask 'what is OUR vacuum? but here it is: a QUANTUM liqud and it has the substance of "string-nets".
He also postulates closed strings and open ones. (What-s?)
the closed ones fluctuate in waves (=photons) and the open ones have endings we consider electrically charged (also callable: particles).
In my original (uneducted) question I wanted to ask what kind of a vacuum is "filled"? is it still a (full) vacuum? Do the 'strings' have a 'filling' quale? or is a 'string-filled' plenum still empty (as in vacuum)? If the strings fluctuate into waves, what fluctuates? I am afraid that ANY answer will start another string of questions.

The vocabulary is not so clear, then again it is the nth consequence of the mth consequential result of an old  assumption: the assumption of the physical world.

Please, do not reply! I just realizes that this entire topic is way above my preparedness and just have "let it out".

Some clarifications:

The vacuum IS a string-net liquid.  But the strings are not continous.  As you can see in the picture in Figure 1.8 at page 9 (page 14 in the pdf file) in Xiao-Gang Wen: "Introduction to Quantum Many-boson Theory (-: a theory of almost everything :-)", that can be found at , and in the 10th slide of his talk "An unification of light and electron" at , there the strings consist of discrete points.  And it is these discrete points that ARE the space.  There is no space between the points.  The vacuum IS these points.

This might be hard to understand.  But this is the same thing that there were no time "before" the Big Bang.  The time started with Big Bang.  And there is the same thing with the space points in the strings in the discrete space.  There is no space "between" the space points.  This is hard to understand mentally, but it can be understood mathematically.

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