Untangling Quantum Causation

This is a 2013 thread I created on sciforums that discusses the pros and cons of Loop Quantum Gravity and a number of insights into it versus a response by a working theoretical Physicist (two actually), where they measure it against String Theory.

BY MARKM125:

"Considering this thread is about LQG, I'll type a quick post about the subject.

What is LQG?

Loop Quantum Gravity is an attempt to quantize General Relativity by introducing gauge fields (like any QFT) onto a curved background. In doing so, two basic symmetries are demanded of the theory - gauge invariance, and invariance under the diffeomorphism group.

Most readers are probably familiar with the first, if not, here's the basic idea: A local gauge transformation is a transformation performed on a Lagrangian dependent on the point in spacetime (i.e. it's local). For example, a transformation of the form AОјв†'AОј+ПµBОјAОјв†'AОј+ПµBОј (Where AОјAОј is the vector potential. You can verify this by simply plugging this in to the equations giving the E and B fields in terms of the vector potential. ) is a global gauge transformation - it will leave the classical Maxwell Equations invariant, but it doesn't depend on the coordinates. Instead, a local GT will have such a position dependence. The result is then this: the gauge transformations of a particular form (i.e. Multiplication by a unitary matrix) will form a Lie Group, which in tern has several generators. The generators then can be associated with vectors fields, which are then quantized into particles. These particles are then your gauge bosons, such as photons, W bosons, Z bosons, and gluons. For example: the group U(1)U(1) is a symmetry group of QED, and gives rise to the photon and its interactions.

Diffeomorphism invariance is a property of general relativity. It's the ultimate form of relativity - as long as we perform some continuous deformation of the background spacetime, we still have a consistent theory. Thus, any theory with the spirit of GR should, as is felt by proponents of cannonical approaches to quantum gravity, contain this symmetry. Essentially, DI demands that we construct a theory that has no dependence on the background spacetime. We can associate this mathematical idea with general covariance - choose any frame you wish, and physics is the same.

Now, one of the critical equations in the field of quantum gravity is the Wheeler-DeWitt equation, taking the form

Hв€ЈП€вџ©=0Hв€ЈП€вџ©=0

Where П€П€ is the "wavefunction of the universe", or simply, the quantum representation of one possible state of spacetime. In analogy to quantum mechanics, we should find the solutions to this equation, use them to construct a general Hilbert (or Fock? Not sure) space, and then express the quantum state of spacetime, and hence the gravitational field.

Following a mathematical reformulation of GR in terms of Ashtekar variables, it was determined that solutions could take the form of "spin netowrks" (see John Baez's page for a ton of info) that evolve in time as "spin foams". Then the dynamics of the gravitational field can be expressed as a superposition of these spin foams. Spin foams can be thought of as the repeated action of a scalar constraint в€ЈП€(t1)вџ©в€јeв€'iHОґtв€ЈП€(t0)вџ©в€ЈП€(t1)вџ©в€јeв€'iHОґtв€ЈП€(t0)вџ©.

That's the basic structure. Here are the consequences:

1. Firstly, the graviton propagator reduces to the inverse square law over long distances.

2. The symmetries of GR are retained.

3. The usual action remains, consisting of the Ricci Scalar with additional quantum corrections.

4. The use of "Wilson Loops" in the theory preserves gauge invariance and results in a minimum area of 10в€'6610в€'66 meters squared. The square root is roughly the Planck length.

If you're interested into delving into the theory, there are various lecture notes on the subject. I'd recommend the one by Pietro Dona and Simmone Spezial."

http://www.sciforums.com/threads/loop-quantum-gravity-lqg.135750/

Dear Anonymous,

I do not expect anyone to do any of my research seeing that Reality does not need to be researched. Virtual Reality is pretentious codswallop about the invisibly impossible only mindlessly speculated upon by ignorant junk science boors.

Joe Fisher, Realist

Dear Nicholas,

The real Universe is excruciatingly simple to understand. The real universe consists only of one unified visible infinite surface that is always illuminated by infinite non-surface light. No part of the infinite surface am ever affected by finite amounts of invisible quantum gravity.

Joe Fisher, Realist

Let's see. Reality doesn't require being researched, so Joe doesn't really do any, yet says he's a 'researcher in good standing'. Maybe that's why the other guy got $2.8 billion for his research. If that be codswollop, gimme a bucket full.

Dear Anonymous,

Although I am not affiliated with any accredited academic institution and I have no academic credentials, I do have ORCID. The Foundational Questions Institute offered a Grant for research into the Physics of the Observer. I applied for a Grant citing that I had observed that the real Universe only consisted of one unified visible infinite surface that was always illuminated by infinite non-surface light. Of course my request was denied without a reason being given for the denial. Over forty Physics Professors including Professor Max Tegmark, the Director of Science for FQXi.org are aware of my truthful contention and they have ignored it. You now know the truth and you dare to insult me by sneering about the fact that I have never been paid for writing the truth.

Joe Fisher, Realist

Dear Steve Dufourny,

I understand why you wish to be anonymous, but please consult a qualified psychiatrist. You need professional help.

Joe Fisher, Realist

why you attack me Mr Fisher ? It is not me the message? I have hackers and teams agianst me but you know what,It is just a band of comics.That is all.If you are in this strategy, so I am suggesting that you pray,that is all like I pray for your soul.I have been menaced on net, hacked, two pc destroyed, plagiarists, startegies, and you know what ? Just for my theory of spherisation ,MY WORK,not these persons.I know who they are you know.But I ignorate them and play with them also now.They have wanted know my faith and knowledges, now be sure they know it,the rest is vain for me.So frankly you , others or this or that, it is not important, I constinue to share my theory and imrpove it with or without their approvements.Perhaps they do not want that I am recognised,but it is not important,I am a scientist, me not a business man full of hormons and vanity and hate.Let's pray for thir poor souls without nor generalities and consciousness.It is the life.And don't forget take your meds and give them also to your friends obliged to continue the strategy.If you are not one of these plagiarists ,so you go in psychiatry illuminated by your own surface of nothing for nothing.Bye dude.

I am conscious of my discovery and its potential at short, middle and long term,so it is logic to have teams agianst me.I am honored to have all these plagiarists of all countries.It is cool in fact.Their stratégies fall down like their credibility.Probably that they cannot return at logic due to this play.They are now in a bad situation.But it is not my problem.They are just false scientists thinking that they are real searchers.No they are not§! It is the reason why they prefer the business, this Under sciences and the game like if they were intelligent and smart.It is ironical in fact to see all these stratégies and plagiarists.I have pity for them in fact.They are just full of hate ,that is all.This game gives them in fact a kind of personal satisfaction.Probably that they have some kinds of intrinsic frustration.But it is the life, they exist these persons destroying the altruism and universalism.They are not scientists.They are false scientists.

Hey Steve,

pay no mind, you're doing fine. Actually the universe has just again displayed its sense of humor.

And don't let that venom cause you distress, your worries about Linked-In are not at all groundless. There is a global political reluctance to regulate the www and nothing to prevent the wholesale utility of open set bit sequencing in conducting connectivity. Consequently if you click a link embedded with such there is little to stop intrusions. The best defense on your own computer is to go into your settings and 'disable wi-fi' then 'disable cookies' any place you find switches to do so. Hard wire is still the best countermeasure.

Oh! and Steve,

once you have disabled cookies, there will be a number of webpages that will not function due to the length of script that requires cookies. Don't let that mislead you in thinking something's wrong. Its simply that you're better protected and generally the screen will lock up. Its a nuisance but better than bullets, and a lot of time you have to close out and manually clear browser cache on restart.

Hello Steve D.,

I recently posted something to viXra.org that might be of interest to you. The title of the paper is "Quaternion Dynamics, Part 2 ...". The url is as follows:

http://vixra.org/abs/1608.0096

Pay no attention to certain individuals. The universe simply has a sense of humor.

I'm still practicing. I am getting to the point that I play scales on the guitar pretty fast and in time with the metronome, and of course Hanon on the piano.

Best Regards,

Gary Simpson

Hello Mr Simpson,

Thanks for the advices, it is nice.I am going to read your work about quaternion.Thanks also for sharing it.

About piano and guitar, :) Continue,don't stop.The spherical waves dance and turn and vibe around the sphère and its sphères....

Best Regards

Deleting posts is like changing history. It doesn't erase the indelible memory your conduct created in the minds of others at the time.

Dear Gary, and Steve, and Anonymous,

You had all better start paying attention to me. All the Professors of Physics have to offer is "DOUBT' After spending years insisting that there was an invisible black hole in invisible space, Stephen Hawking hinted that perhaps there was not. No physical proof of the invisible big bang has ever been found, and to guess if the ever expanding universe was nine billion light years old, or thirteen and three quarters of a billion light years old is to admit to being preposterously ignorant.

I am CERTAIN that the real Universe must be simply constructed. The real Universe must eternally consist only of one unified visual infinite surface that am always illuminated by perpetual infinite non-surface light.

Joe Fisher, Realist

I did not request that your post be taken down. I answered your post. My sensible answer was removed as well as your post.

Joe Fisher, Realist

The Joe Fisher user profile, very maliciously impuned Steve Duforney out of supposition which displayed his own narcism and being entirely out of touch with the reality of this forum. But then Steve's own posting of legitimate complaint is deleted by the miscreant to escape the embarrassment his own posturing has revealed. The Fisher profile exhibits behavioral patterns of the compulsive 'Gamer', esc being the go-to button in virtual reality online multi-player tight spots.

But this is a scientific endeavor. Nothing is deleted from server storage, and this has become a double blind experiment in which the demands for attention by the subject have succeded. He has gotten attention, but it is on him not open to him. He can call scientific method 'codswollop' and assail the mentality and character of people in science, yet objects to severe language in response?

What happened to:

http://fqxi.org/community/forum/topic/2677#post_122677

"Joe"?

Kids that are good at video games have 'fast' eyes. That is what makes then good. But they don't know that, they assume it to be some other attribute they find appealing and expect those attributes to be equally successful in the real world. But 'fast' eyes are the deal-breaker for jet jockeys in training regardless of all other skill sets. A domesticated cat with conditioned reflexes focused on a slow movement of the evening food bowl offering can become entranced with a virtual mouse on an old fashioned television screen (we are scientists not gamers so we know how those things actually worked) but a ferral cat will ignore the screen. It doesn't see a seamless image, it sees the sequential lines of the programmed electron projection panograph. The ferral cat's eyes are that much 'faster'.

Gamers know that the imagery is built up of layering, like GIS. Joe is describing the seamless appearance of the final product while denying the layering.

My mistake, Joe. See how double blind experimentation works?

Hello Mr Simpson,

It is A beautiful work of analytic geometry.Congratultion.I see that you thank Dr Edwin Eugenene Klingman, tell himhello.I am remembering 5 or 6 years ago when he was on this Platform,I liked to read his posts.Hope he is well.Best Regards

Any proprietary server, that is the physical data operating system of an institution with fiduciary responsibility which includes but not limited to intellectual property and such rights of privacy and sequester, will categorically reject transport protocols with an open source identifier. Strictly for security reasons, certain protocols are required that prevent piggy-backing of malware into the system. FQXi is a virtual institute with a legal proxy address in the U.S. but no physical address. And while fqxi is an open source venue, its affiliation with Perimeter makes it a portal into the proprietary data system of Perimeter. Despite ones preference for absolutely open internet and such open source meme generators such as ORCID, security protocols automatically block or segregate alphanumeric sequences that are allocated to an open source identity.

If you lodge textual content in registry with an open source such as ORCID, which itself has no requirement of credential, then zip it into a transport file to offices of Professors and institutions, chances are that it will never be seen. Try Facebook, or some 'publish free!!! with no expectation of reward!' subscribership. Your identity is not well secured in cyberspace as it is, it would be blind faith to open the zip-file. They just don't want to say that on webspots about ORCID, which really benefit publishers not poets.

But back to the aptly named Perimeter, it does have a real physical address. In Canada. Why don't you Yanks have to qualify yourself?