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Cuchulainn
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Re: negative transition probability

March 31st, 2018, 10:49 am

In physics on the other hand one are accepting the negative probabilities showing up in quantum mechanics. Instead of saying this is clearly a evidence of incomplete models, one are instead speculating/introducing such things as negative energies, ghost states etc. Negative as well as above unity probabilities are quite often used in modern physics without much critical voices. 

No one has proved that negative probabilities exist. So trying to use them is pointless. 
The model is probably not 100% correct.
 
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Collector
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Re: negative transition probability

March 31st, 2018, 11:16 am

In physics on the other hand one are accepting the negative probabilities showing up in quantum mechanics. Instead of saying this is clearly a evidence of incomplete models, one are instead speculating/introducing such things as negative energies, ghost states etc. Negative as well as above unity probabilities are quite often used in modern physics without much critical voices. 

No one has proved that negative probabilities exist. So trying to use them is pointless. 
The model is probably not 100% correct.
"The model is probably not 100% correct."  Yes this is nice way (normally also my political correct way) of saying something is wrong! Here very wrong and Fake!

Lets forget political correctness! Their models are wrong!

I Declare War on Fake Probabilities and their Corresponding Fake Models and Fake interpretations!
 
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Re: negative transition probability

April 1st, 2018, 10:56 am

Collector,
What's your view on this now?

http://citeseerx.ist.psu.edu/viewdoc/do ... 1&type=pdf
 
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Collector
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Re: negative transition probability

April 1st, 2018, 6:09 pm

Collector,
What's your view on this now?

http://citeseerx.ist.psu.edu/viewdoc/do ... 1&type=pdf
I was too positive, but yes in finance we can understand exactly why they show up in some models, and the solution is to choose models without them, adjust input-parameters such as numbers of time-steps etc to remove negative probabilities. In physics they invented all kind of crap fake interpretations about reality to save their fake probabilities:

"negative probability was thus replaced with negative mass" from a Brief History of String Theory!

"providing a clear example of the negative (or “extended”) probabilities characteristic of quantum mechanics."

"This result provides a clear example of the negative probabilities appearing in quantum mechanics and confirms previous findings suggesting that any statistical interpretation of quantum mechanics cannot be based on a plain equivalence between quantum mechanical and classical stochastic processes." Quantum Mechanical versus Stochastic Processes in Path Integration

"The main result in the just mentioned paper was the surprising discovery that the renormalized....contains the ghost state -- which has a negative probability."

Negative quasi-probability as a resource for quantum computation


"Negativity is necessary for magic state distillation."


why are several finance quants often referring to physics as being much more sound than quant finance?

We are in the magic-mystical age of quantum physics that at some point should be replaced with science and logic? Very advanced curve fitting, no matter how well predictions it gives is not deep science (and I bet it all breaks at the Planck scale)!



"String theory and string cosmology
"At present there is only one known theory of gravity, string theory, that contains fields and matter that manages to give calculable non-negative quantum mechanical probabilities. "

Assume we can trust the Swedes (??), what do you go for Chuh, evil-strings or fake-negative probabilities? 


If one are in the middle of a dark age will one notice it before one are out of the darkness?
 
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Re: negative transition probability

April 3rd, 2018, 9:09 am

"negative probability" feels like a deus-ex-machina of physics

Image
 
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Collector
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Re: negative transition probability

April 3rd, 2018, 9:52 am

Image
 
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Re: negative transition probability

April 3rd, 2018, 10:22 am

The term has evolved to mean a plot device whereby a seemingly unsolvable problem is suddenly and abruptly resolved by the inspired and unexpected intervention of some new event, character, ability, or object. Its function can be to resolve an otherwise irresolvable plot situation, to surprise the audience, to bring the tale to a happy ending, or act as a comedic device.

In software development we see analogous stories:

An error is a wrong decision that was made during the development of a software product. A defect is a property of a software system that may cause that system to depart from its intended behaviour. A fault is the event of a software system departing from its intended behaviour during one of its executions.
 
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Collector
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Re: negative transition probability

April 4th, 2018, 6:59 am

PS I also noticed some colors on last illustration did not look good on the web, not the real color, fake colors came out (as seen from one of my Macs). I talked with my illustrator-in-Chief, She said RGB better for web and CMYK better for print...good to know to avoid Fake colors..easy to swap in photoshop.

The one below is RGB, the one above is CMYK, can anyone see difference in the colors? well think CMYK worked well on W.

my v max formula leads to a maximum quantum probability of exactly one!  Very interestingly it also looks like I am getting a probability-gap, the smallest probability above zero, when looking for mass or energy.


Image
 
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Re: negative transition probability

April 4th, 2018, 1:59 pm

Indeed, you never can tell these days.

Image
 
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Collector
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Re: negative transition probability

April 4th, 2018, 3:52 pm

yes and Impossible colour popular these days?
 
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Cuchulainn
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Re: negative transition probability

April 4th, 2018, 4:42 pm

yes and Impossible colour popular these days?
Never mix your colours!
 
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Collector
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Re: negative transition probability

April 8th, 2018, 6:04 pm

related to this is also Fake temperatures, temperatures < 0 K.  recently more focus on fake temperatures 

"Here, we prove that all previous negative temperature claims and their implications are invalid as they arise from the use of an entropy definition that is inconsistent both mathematically and thermodynamically." 

Consistent thermostatistics forbids negative absolute temperatures

Fake temperatures, Fake masses etc are almost always linked to strange interpretations of quasi-distributions.

luckily Fake temperatures cannot exist! Not even in Hell! So  please dont worry about < 0 Kelvin. And I am quite sure also no temperature above the Planck temperature, it is impossible! 

I can guarantee the temperature in Hell must be in the range

\(0\leq T \leq T_p \)

so nothing to be surprised or scared off there.
Last edited by Collector on April 8th, 2018, 7:00 pm, edited 10 times in total.
 
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Re: negative transition probability

April 8th, 2018, 6:14 pm

why the negative probs in the Wigner quasi-prob-distribution? I suspect possibly something to do with ignoring the Planck scale. allowing position < Planck length and momentum above Planck momentum etc. is one possibility causing this.

 I am just trying to look more closely at Wigner, anyone knowing exactly what is going on in the quasi distribution. Exactly why the Fake probabilities?


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Image
 
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Re: negative transition probability

April 8th, 2018, 10:47 pm

do physics always have imaginary numbers related to their Fake probability functions? or is it just a coincident in the functions I have looked at so far?

great curve fitting functions consistent with a large set of observations do not necessary mean the model gives deep insight about the depth of reality.

probabilities are only an illusion, at the bottom of the rabbit hole probabilities can not really be distinguished from space and time. 
 
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