Philosophy of Physics Philosophy of Physics Forum  Philosophical questions about our universe  5Likes
May 5th 2018, 07:16 AM

#11  Member
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 dt
I think that the biggest discovery of X4 should be the differential form of time dt is the same in any world, unfortunately, maybe it's showing to anybody

 
May 5th 2018, 11:29 AM

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Originally Posted by htam9876 Maybe we should not discuss theory here step by step. It's so vapid. Maybe guys who are interested in anti matter should go to the finacial market directly,and I try to use X4 to produce anti matter for him. 
Seeing as this is the place to discuss theory I see no reason not to continue.
So how are you going to vary X4 to make energy? It's apparently a "dimension" that is outside the usual 4 in SR. How do you get to it?
Dan
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May 5th 2018, 11:31 AM

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Originally Posted by htam9876 I think that the biggest discovery of X4 should be the differential form of time dt is the same in any world, unfortunately, maybe it's showing to anybody 
What on Earth are you talking about? Of course dt is the same in any world!
The number of your unsubstantiated claims are starting to put you in "ban" territory.
Dan
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Jun 21st 2018, 12:01 AM

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 ...
Negative Energy State Reinterpreted in X4 Theory
We talk about it in one dimension for simplicity.
I point out in the article The Basic Mechanics for Anti Matter that the space(frame) of anti particle is mirror reflected in its own world to that in our familiar world: X1 =  X
People might imagine that time t could be mirror reflected, and the symbols – t or d( t) appeared in some lecture books. They seem meaningful in math, but they are meaningless in physics(or the real cosmos). I will interpret why after the detailed theory of time come out.
Now, let’s turn to the negative energy state about particle in Quantum. The wave function for such situation of free particle could be seen in some lecture books:
Ψ（x, t）= N exp( i(Et – P•x)) E＜0
How it is reinterpreted with – t and d( t), see those lecture books. Next, I reinterpret it in X4 theory.
Ψ（x, t）= N exp( i(  Et – P•x))
= N exp( i( Et + P•x))
= N exp( i( Et – P•（x))）
So:
Ψ（x1, t）= N exp( i( Et – P•x1))
And we notice that the above representation is equivalent to
Ψ（x1, t）= N exp( i(P•x1– Et ))
= N exp( i(Et– P•x1 ))
The reinterpretation of the above wave function is: positive energy anti particle flows forward in time in its own world.
Chen Li Qiang
June,2018

 
Jun 21st 2018, 06:53 AM

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Originally Posted by htam9876 Negative Energy State Reinterpreted in X4 Theory
We talk about it in one dimension for simplicity.
I point out in the article The Basic Mechanics for Anti Matter that the space(frame) of anti particle is mirror reflected in its own world to that in our familiar world: X1 =  X
People might imagine that time t could be mirror reflected, and the symbols – t or d( t) appeared in some lecture books. They seem meaningful in math, but they are meaningless in physics(or the real cosmos). I will interpret why after the detailed theory of time come out.
Now, let’s turn to the negative energy state about particle in Quantum. The wave function for such situation of free particle could be seen in some lecture books:
Ψ（x, t）= N exp( i(Et – P•x)) E＜0
How it is reinterpreted with – t and d( t), see those lecture books. Next, I reinterpret it in X4 theory.
Ψ（x, t）= N exp( i(  Et – P•x))
= N exp( i( Et + P•x))
= N exp( i( Et – P•（x))）
So:
Ψ（x1, t）= N exp( i( Et – P•x1))
And we notice that the above representation is equivalent to
Ψ（x1, t）= N exp( i(P•x1– Et ))
= N exp( i(Et– P•x1 ))
The reinterpretation of the above wave function is: positive energy anti particle flows forward in time in its own world.
Chen Li Qiang
June,2018 
Interesting ideas, but wrong. What you are trying to do is a "parity inversion." But these leave time invariant. Under a parity inversion we take $\displaystyle x \to x$ but $\displaystyle t \to t$. In order to get $\displaystyle t \to t$ we need an extra time conversion.
In general there are three main transforms to "turn a particle" into an antiparticle. They are parity, charge conjugation, and time inversion. (Charge conjugation turns a particle into an antiparticle.) This is known as the CPT theorem. Under CPT symmetry antiparticles look like they are following the reverse path that a particle would take. So if we have an electron traveling at speed v under the CPT symmetry we would have an antielectron (a positron) traveling a speed v with the coordinate system transforming as $\displaystyle x \to x$.
For this symmetry we have that the electron has a positive energy and so does the positron. There are no negative energy states in Physics.
Dan
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Last edited by topsquark; Jun 21st 2018 at 06:55 AM.

 
Jun 22nd 2018, 07:46 AM

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Good ball, but...X4 is X4 whether the negative energy state in some letures exist or not. What's the cause of the inversion of electrical charge?

 
Jun 23rd 2018, 08:02 AM

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Originally Posted by htam9876 Good ball, but...X4 is X4 whether the negative energy state in some letures exist or not. What's the cause of the inversion of electrical charge? 
My point is that there are no negative energy states. This is not a matter of opinion but verified fact. Anything like a negative energy state falls into the same class as tachyons... So far as Physics is concerned tachyons don't exist either.
The whole idea behind the CPT theorem is to calculate a particle state that is a mirror to the particle. So we need to invert the spacial axes (called parity, P), we need to invert the time axis (called a time inversion, T), and change the particle state into an antiparticle state (charge conjugation, C) If you do all these three things then you have the mirror image of the original particle state. QFT requires CPT invariance else it is dead wrong, which would be a catastrophe for Relativistic QM.
A quick example. Say we have an electron moving at velocity v; call this $\displaystyle \psi _e ( \textbf v , \text x , t,  )$. (The negative sign at the end is the electron's charge.) Acting on this state by the operator CPT we get the mirrored state to be $\displaystyle \psi _p (  \textbf v,  \textbf{x}, t , + )$. We call this inverted state a positron. Dirac's idea of a sea of negative electron energy states has been long since retired.
See here as well.
Dan
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Last edited by topsquark; Jun 23rd 2018 at 08:25 AM.

 
Jun 24th 2018, 01:29 AM

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A bit God's hand. Why couldn't we say that electrical charge has space effect,namely,the inversion of electrical charge has something to do with the inversion of space? I like navy. I'm watching a Hollywood film BATTLESHIP. It's interesting.

 
Jun 25th 2018, 02:30 AM

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Posts: 191

Originally Posted by htam9876 A bit God's hand. Why couldn't we say that electrical charge has space effect,namely,the inversion of electrical charge has something to do with the inversion of space? I like navy. I'm watching a Hollywood film BATTLESHIP. It's interesting. 
If you invert space (specifically, perform a transform (x,y,z) > (x,y,z) relative to some origin), the physics is the same. It doesn't do anything. It would just be like watching something in a mirror.
The point of performing things like CPT transformations is to see how physics is affected by those transformations so that one can identity symmetries or inconsistencies, the latter of which can indicate issues. What you're proposing is to introduce an inconsistency under a spatial transformation, which is a bit daft.
I wasn't a fan of Battleship, but then again, I don't really like any military films unless they're dramatised documentaries (like Dunkirk) or satirical. If you like Battleship, you should watch Top Gun
Last edited by benit13; Jun 25th 2018 at 02:46 AM.

 
Jun 25th 2018, 01:39 PM

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Join Date: May 2014 Location: Poole, UK
Posts: 132

Originally Posted by htam9876 Good ball, but...X4 is X4 whether the negative energy state in some letures exist or not. What's the cause of the inversion of electrical charge? 
You flip the chirality. The positron has the opposite chirality to the electron.

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