Showing posts with label meaning of reality. Show all posts
Showing posts with label meaning of reality. Show all posts

Sunday, March 6, 2011

I Am Convinced God Does Not Play Dice



Jack Dikian
March 2011

Introduction

The Copenhagen interpretation of quantum mechanics proposes, generally, that the outcome of any measurement cannot be measured with certainty. This leads to the situation where measurements of a property performed on two identical systems can give different answers.

However, can a deeper reality, hidden beneath quantum mechanics, described by a more fundamental theory predict the outcome of measurement with certainty. Einstein, a proponent of a deeper reality (hidden variables) hidden famously insisted that, "I am convinced God does not play dice”.

Quantum mechanics puzzle

Quantum mechanics creates the puzzling situation in which a measurement of one system can "poison" the measurement of the other system, no matter what the distance between them. One could imagine the two measurements were so far apart in space that special relativity would prohibit any influence of one measurement over the other.

For example, say, in a neutral-Pion decay, where two photons travel some light years apart – if the spin of one photon is measured, quantum mechanic suggests that that measurement instantaneously forces the second photon into a state of well-defined spin - even though it is light years away from the first.

Einstein, Podolsky, and Rosen (EPR) argued that elements of reality must be added to quantum mechanics and postulated that the existence of unknown properties should account for the discrepancy – that there is a deeper reality.

A conundrum

How do we reconcile the fact that the second photon "knows" that the spin of the first photo has been measured, even though they are separated by light years of space and far too little time has passed for information to have traveled to it according to special relativity?

We can accept the postulates of quantum mechanics its seemingly uncomfortable coexistence with special relativity, or we may believe that quantum mechanics is not complete:


Wednesday, November 10, 2010

On Consciousness and Reality


Jack Dikian

November 2010

Background

Anyone who has undertaken a physics course beyond that of secondary school will have no doubt been confronted and perhaps shocked with the strange and schizophrenic nature of atoms. The comfortable Copernican view of the atom had to make room to a much weirder explanation of the atom and, by implication, the very bedrock of reality itself vis-à-vis Quantum Mechanics, Exclusion principle, Uncertainty principle, Schrödinger’s cat

The Copenhagen interpretation of quantum mechanics described as a key feature of quantum mechanics the state of every particle as a wave-function, which is a mathematical representation used to calculate the probability for it to be found in a location or a state of motion.

According to this interpretation, the act of measurement causes the calculated set of probabilities to "collapse" to the value defined by the measurement. To put this simply, the notion that an unmeasured atom is, in some sense, not real, and its attributes are created or realized through the act of measurement.

This interpretation places observers in a special position - the founders of quantum mechanics debating the role of the observer, and believing that it is the observer that produces collapse. Incidentally, this view was rejected by Einstein calling it anti-scientific. Pauli described quantum mechanics as lucid mysticism.

Hugh Everett in the 1950’s postulated the idea of the many-worlds interpretation which asserts the objective reality of the wave-function, but denies the reality of wave-function collapse, which implies that all possible alternative histories and futures are real. Here, the memories of the observer split at every measurement, leading to the subjective appearance of collapse.


Eugene Wigner made quantum physics even more subjective when in the 1960’s, in his "Remarks on the mind-body question", an assay in his collection of assays Symmetries and Reflections, claimed that a quantum measurement requires a conscious observer, without which nothing ever happens in the universe. The key idea has become known as the consciousness causes collapse interpretation.

Where are we know

Thomas J. McFarlane in an article “Consciousness and Quantum Mechanics” provides a summary of what the quantum realm has revealed to be beneath the illusion of Newton's classical universe. The points below are paraphrased;

  • Atomic matter dissolves into waves of potential existence.
  • Rigid determinism falls apart, giving us a world with spontaneity.
  • The objective world, existing "out there" independent of observers, vanishes, leaving a world in which the observer and the observed are interdependent.
  • That the manifold world of separate independent objects interacting locally within space and time is transcended, revealing a realm where all things are nonlocally united in an indivisible whole.

It is the last two points that seem to suggest that consciousness is linked at a deep level with physical reality. Many theories, including interdisciplinary approaches such as that of Saul-Paul Sirag have been developed.

I would like to concentrate on Sirag’s approach in the remaining of this piece.

Sirag's strategy is to look to mathematics for an appropriate structure to describe the relationship between consciousness and the physical world. He finds that unified field theories of the physical forces depend fundamentally on mathematical structures called reflection spaces, which are heierarchically organized in such a way that an infinite spectrum of realities is naturally suggested.

Sirag studied the works of Sir Arthur Eddington and was impressed by Eddington’s use of group theory in developing his unified field theory. Eddington's unification was based upon the 4-element group called the Klein group K4. Eddington thought of this group as describing the structure of the most elemental measurement: seeing whether or not two rigid rods are the same length.

Eddington had declared K4 to be the primary group structure of the acquisition of physical knowledge. Sirag recognized a connection between Eddington’s use of the K4 and Piaget's work on the structure of the acquisition of knowledge by children. Piaget found, by testing children in precisely contrived situations, that K4 was also the basic structure of children's acquisition of physical knowledge. Piaget's names for the four elements of K4 are identify, negation, collaterality and reciprocity.

It is generally believed by physicists working on unified field theory that space-time is hyper-dimensional, with all but four of the dimensions being invisible. Beside space-time dimensions, there are also other internal dimensions called gauge dimensions. In Sirag's view both the extra space-time dimensions and the gauge dimensions are real. This provides scope for considering ordinary reality a substructure within a hyper-dimensional reality.

Sirag's approach is that his version of unified field theory embeds both spacetime and gauge space in an algebra whose basis is a finite group. This is a symmetry group of one of the Platonic solids -- the Octahedron. Thus it is a mathematical entity contained in the reflection space hierarchy. In fact the reflection space corresponding to the Octahedron is 7-Dimensional and is also a superstring-type reflection space, so that a link with the most popular version of unified field theory is provided.

The central theme of Sirag's theory is that this 7-Dimensional reflection space is a universal consciousness, and that individual consciousnesses tap into this universal consciousness. This implies that the high level of consciousness enjoyed by humans is due to the complex network of connections to the underlying reflection space afforded by a highly evolved brain.

Tuesday, October 19, 2010

What's Real - Grand Design




Jack Dikian

Thoughts and Comments
The Grand Design
Bantam books 2010



According to one internet based dictionary, “Real” is being or occurring in fact or actuality; having verified existence; not illusory; "real objects"; "real people -not ghosts" etc…

When philosophy is leaned-upon, things become, expectedly a little more murky. Despite the seeming straightforwardness of the realist position, in the history of philosophy there has been continuous debate about what is real. In addition, there has been significant evolution in what is meant by the term "real".

Contemporary philosophical realism is the belief that our reality is completely ontologically independent of our conceptual schemes, linguistic practices, beliefs, etc. Philosophers who profess realism, therefore, also typically believe that truth consists in a belief's correspondence to reality.

Model-dependent realism as discussed by Stephen Hawking and Leonard Mlodinow in their 2010 book The Grand Design is a scientific method of exploration based on how well a model does at describing the physical reality of the situation. Among scientists, this is not, necessarily a controversial approach. This, however, implies that it is somewhat meaningless to discuss the reality of the situation and, rather, the only meaningful thing you can talk about is the usefulness of the given model. One quote from this book…

"There is no picture- or theory-independent concept of reality. Instead we will adopt a view that we will call model-dependent realism: the idea that a physical theory or world picture is a model (generally of a mathematical nature) and a set of rules that connect the elements of the model to observations. This provides a framework with which to interpret modern science."

The authors seem to have developed a theory familiar to philosophers since the 1980s, namely 'perspectivalism'. Perspectivism is the view developed by Friedrich Nietzsche that all ideations take place from particular perspectives.

So according to Hawking and Mlodinow, not only does science fail to provide a single description of reality, they say, there is no theory-independent reality at all. Here, we are told not to expect a unifying theory of everything, rather a set of theories (such as M-theory) that overlap at their boundaries. They argue that the scientific obsession with formulating a single new model may be misplaced, and that by synthesising existing theories we may better provide a picture of unification (my words).

Also, according to the authors, enough is known about M-theory to see that God is not required to answer for the existence of all, instead the existence of a multiverse, à la string theory will suffice.

The authors point out that the laws of nature seem to be tuned incredibly precisely to allow life to exist. Tweak them every so slightly, and there might not even be suns and planets, let alone living things. So the vast majority of those different universes would be uninhabitable.

The author’s argument against divine creation is based on string theory and one associated interpretation, multiverse – however, both strings and multiverse are ideas lacking, obviously, empirical evidence and consistent interpretation.

A thoroughly lucid and accessible book, nicely illustrated and thought provoking.