Two Paul Steinhardt Projects: "Cyclic Universe" and "Quasicrystals"

Two Paul Steinhardt Projects: “Cyclic Universe” and “Quasicrystals”

Albert Einstein Professor in Science, Departments of Physics and Astrophysical…

Quasi-elegance….As a young student first reading Weyl’s book, crystallography seemed like the “ideal” of what one should be aiming for in science: elegant mathematics that provides a complete understanding of all physical possibilities. Ironically, many years later, I played a role in showing that my “ideal” was seriously flawed. In 1984, Dan Shechtman, Ilan Blech, Denis Gratias and John Cahn reported the discovery of a puzzling manmade alloy of aluminumand manganese with icosahedral symmetry. Icosahedral symmetry, with its six five-fold symmetry axes, is the most famous forbidden crystal symmetry. As luck would have it, Dov Levine (Technion) and I had been developing a hypothetical idea of a new form of solid that we dubbed quasicrystals, short for quasiperiodic crystals. (A quasiperiodic atomic arrangement means the atomic positions can be described by a sum of oscillatory functions whose frequencies have an irrational ratio.) We were inspired by a two-dimensional tiling invented by Sir Roger Penrose known as the Penrose tiling, comprised of two tiles arranged in a five-fold symmetric pattern. We showed that quasicrystals could exist in three dimensions and were not subject to the rules of crystallography. In fact, they could have any of the symmetries forbidden to crystals. Furthermore, we showed that the diffraction patterns predicted for icosahedral quasicrystals matched the Shechtman et al. observations. Since 1984, quasicrystals with other forbidden symmetries have been synthesized in the laboratory. The 2011 Nobel Prize in Chemistry was awarded to Dan Shechtman for his experimental breakthrough that changed our thinking about possible forms of matter. More recently, colleagues and I have found evidence that quasicrystals may have been among the first minerals to have formed in the solar system.

The crystallography I first encountered in Weyl’s book, thought to be complete and immutable, turned out to be woefully incomplete, missing literally an uncountable number of possible symmetries for matter. Perhaps there is a lesson to be learned: While elegance and simplicity are often useful criteria for judging theories, they can sometimes mislead us into thinking we are right, when we are actually infinitely wrong. See:
2012 : WHAT IS YOUR FAVORITE DEEP, ELEGANT, OR BEAUTIFUL EXPLANATION?

See Also:

Posted in Uncategorized | Tagged , , | Leave a comment

All-sky map

All-sky map of the CMB, created from 9 years of WMAP data

Comparison of CMB results from COBE, WMAP and Planck – March 21, 2013.

Working out what happened in the moments after the Big Bang is difficult. Scientists can come up with theories, but in the end they are useful only if they can be tested. Nobel prizewinner Robert Laughlin is passionate about experiments. He challenges the students in this film, and laureate David Gross, to come up with ways to test our big ideas about the Universe. The two laureates make a bet. Watch the film to find out more and to decide who wins.See:Betting on the cosmos – with David Gross and Robert Laughlin

See Also:

Posted in Uncategorized | Tagged , , , | Leave a comment

Hmmmm…Pringles Potato Chip Still?

Solving quantum field theories via curved spacetimes by Igor R. Klebanov and Juan M. Maldacena

IN their figure 2. Hyperbolic space, and their comparative relation to the M.C.Escher’s Circle Limit woodcut, Klebanov and Maldacena write, ” but we have replaced Escher’s interlocking fish with cows to remind readers of the physics joke about the spherical cow as an idealization of a real one. In anti-de Sitter/conformal theory correspondence, theorists have really found a hyperbolic cow.

Does Planck 2013 Data hurt the continuance of geometrical underpinnings?

The recent Planck satellite combined with earlier results eliminate a wide spectrum of more complex inflationary models and favor models with a single scalar field, as reported in the analysis of the collaboration. More important, though, is that all the simplest inflaton models are disfavored by the data while the surviving models — namely, those with plateau-like potentials — are problematic. We discuss how the restriction to plateau-like models leads to three independent problems: it exacerbates both the initial conditions problem and the multiverse-unpredictability problem and it creates a new difficulty which we call the inflationary “unlikeliness problem.” Finally, we comment on problems reconciling inflation with a standard model Higgs, as suggested by recent LHC results. In sum, we find that recent experimental data disfavors all the best-motivated inflationary scenarios and introduces new, serious difficulties that cut to the core of the inflationary paradigm. Forthcoming searches for B-modes, non-Gaussianity and new particles should be decisive.See: Inflationary paradigm in trouble after Planck2013

 

X-ray: NASA/CXC/UNAM/Ioffe/D.Page,P.Shternin et al; Optical: NASA/STScI; Illustration: NASA/CXC/M.Weiss

See:

Posted in Uncategorized | Tagged | Leave a comment

Preposterous Universe Episode 1: Thought-Reading in 5 Years?

Preposterous Universe Episode 1: Thought-Reading in 5 Years?
 
Sean’s Post: New Video Project

Obama Proposes Brain Mapping Project 

See Also:

Posted in Uncategorized | Leave a comment

Think About Nature on Edge.Org

Lee Smolin

The main question I’m asking myself, the question that puts everything together, is how to do cosmology; how to make a theory of the universe as a whole system. This is said to be the golden age of cosmology and it is from an observational point of view, but from a theoretical point of view it’s almost a disaster. It’s crazy the kind of ideas that we find ourselves thinking about. And I find myself wanting to go back to basics—to basic ideas and basic principles—and understand how we describe the world in a physical theory. See:Think About Nature

See Also:

Posted in Uncategorized | Tagged , | Leave a comment

John Legend: "True Colors"

http://www.ted.com/talks/john_legend_true_colors.html

See Also:

Posted in Uncategorized | Tagged | Leave a comment

Slac-All Access

Three hundred and fifty miles overhead, the Fermi Gamma-ray Space Telescope silently glides through space. From this serene vantage point, the satellite’s instruments watch the fiercest processes in the universe unfold. Pulsars spin up to 700 times a second, sweeping powerful beams of gamma-ray light through the cosmos. The hyperactive cores of distant galaxies spew bright jets of plasma. Far beyond, something mysterious explodes with unfathomable power, sending energy waves crashing through the universe. Stanford professor and KIPAC member Roger W. Romani talks about this orbiting telescope, the most advanced ever to view the sky in gamma rays, a form of light at the highest end of the energy spectrum that’s created in the hottest regions of the universe.

See: http://fgst.slac.stanford.edu/

See Also:

Posted in Uncategorized | Tagged , | Leave a comment

Geometric Patterns At the Basis of Reality

Western psychological interpretations According to the psychologist David Fontana, its symbolic nature can help one “to access progressively deeper levels of the unconscious, ultimately assisting the meditator to experience a mystical sense of oneness with the ultimate unity from which the cosmos in all its manifold forms arises.”[26] The psychoanalyst Carl Jung saw the mandala as “a representation of the unconscious self,”[citation needed] and believed his paintings of mandalas enabled him to identify emotional disorders and work towards wholeness in personality.[27] See: Mandala

It would be hard for one to see the subjectivity of one’s experiences so that they may say, that such a thing could be misleading. If you believe in a way with which consciousness may have some kind of structure then how would you describe that structure? All you see is a body with a brain, or, words that let you know that some kind of intelligence exists behind the tapping of the keys that represented words that materialize here.

Click the image to open in full size.
Escher Drawing Hands, 1948.

But the idea here is more then that. I became convinced that such methodicalness from a visual representation could be more then the sum of it’s part because in a way, it could encapsulate a lot of things. I grasp on to visual reasoning so as to imply that we can receive pictures that are complete unto themself( complete knowledge of), yet hold greater meaning as the symbol is seen in context of an examination of life.

…underwriting the form languages of ever more domains of mathematics is a set of deep patterns which not only offer access to a kind of ideality that Plato claimed to see the universe as created with in the Timaeus; more than this, the realm of Platonic forms is itself subsumed in this new set of design elements– and their most general instances are not the regular solids, but crystallographic reflection groups. You know, those things the non-professionals call . . . kaleidoscopes! * (In the next exciting episode, we’ll see how Derrida claims mathematics is the key to freeing us from ‘logocentrism’– then ask him why, then, he jettisoned the deepest structures of mathematical patterning just to make his name…)

* H. S. M. Coxeter, Regular Polytopes (New York: Dover, 1973) is the great classic text by a great creative force in this beautiful area of geometry (A polytope is an n-dimensional analog of a polygon or polyhedron. Chapter V of this book is entitled ‘The Kaleidoscope’….)”

So lets say “you are present” with a experience in your dream time that is totally off the wall. Who is it’s manufacturer to have detailed such a scene so as to speak to something quite personal to you, and with it, help you to see the error of your ways? How is complete knowledge gained? You knew better already?:)

Felix Klein on intuition

It is my opinion that in teaching it is not only admissible, but absolutely necessary, to be less abstract at the start, to have constant regard to the applications, and to refer to the refinements only gradually as the student becomes able to understand them. This is, of course, nothing but a universal pedagogical principle to be observed in all mathematical instruction ….

I am led to these remarks by the consciousness of growing danger in Germany of a separation between abstract mathematical science and its scientific and technical applications. Such separation can only be deplored, for it would necessarily be followed by shallowness on the side of the applied sciences, and by isolation on the part of pure mathematics ….

Perhaps you can write a visual interpretation of an image that would likely pass as close to the image that is being described. Do you find familiarity with it or have you see it some where else?

Intuition and Logic in Mathematics by Henri Poincaré

On the other hand, look at Professor Klein: he is studying one of the most abstract questions of the theory of functions to determine whether on a given Riemann surface there always exists a function admitting of given singularities. What does the celebrated German geometer do? He replaces his Riemann surface by a metallic surface whose electric conductivity varies according to certain laws. He connects two of its points with the two poles of a battery. The current, says he, must pass, and the distribution of this current on the surface will define a function whose singularities will be precisely those called for by the enunciation.

The dream is a little hidden door in the innermost and most secret recesses of the soul, opening into that cosmic night which was psyche long before there was any ego consciousness, and which will remain psyche no matter how far our ego consciousness extends…. All consciousness separates; but in dreams we put on the likeness of that more universal, truer, more eternal man dwelling in the darkness of primordial night. There he is still the whole, and the whole is in him, indistinguishable from nature and bare of all egohood. It is from these all-uniting depths that the dream arises, be it never so childish, grotesque, and immoral. Carl Jung

Click the image to open in full size.

By ‘dilating’ and ‘expanding’ the scope of our attention we not only discover that ‘form is emptiness’ (the donut has a hole), but also that ’emptiness is form’ (objects precipitate out of the larger ‘space’) – to use Buddhist terminology. The emptiness that we arrive at by narrowing our focus on the innermost is identical to the emptiness that we arrive at by expanding our focus to the outermost. The ‘infinitely large’ is identical to the ‘infinitesimally small’. The Structure of Consciousness John Fudjack – September, 1999

Click the image to open in full size.

Is there not some understanding here of what is gained by a deductive/inductive realizations with regard to our interactions with the world? Is there not some sense here of something topologically significant on a abstract level, that explains this aspect of consciousness? I call it a toposense?

If conceived as a series of ever-wider experiential contexts, nested one within the other like a set of Chinese boxes, consciousness can be thought of as wrapping back around on itself in such a way that the outermost ‘context’ is indistinguishable from the innermost ‘content’ – a structure for which we coined the term ‘liminocentric’.

Posted in Uncategorized | Tagged , , | Leave a comment

Who is the Clockmaker?

Crucifixion (Corpus Hypercubus) – oil painting by Salvador Dalí

I see a clock, but I cannot envision the clockmaker. The human mind is unable to conceive of the four dimensions, so how can it conceive of a God, before whom a thousand years and a thousand dimensions are as one?

  • From Cosmic religion: with other opinions and aphorisms (1931), Albert Einstein, pub. Covici-Friede. Quoted in The Expanded Quotable Einstein, Princeton University Press; 2nd edition (May 30, 2000); Page 208, ISBN 0691070210

The phrase of course stuck in my mind. Who is the clockmaker. I was more at ease with what Einstein quote spoke about with regards to the fourth dimension and here, thoughts of Dali made their way into my head.

The watchmaker analogy, watchmaker fallacy, or watchmaker argument, is a teleological argument. By way of an analogy, the argument states that design implies a designer. The analogy has played a prominent role in natural theology and the “argument from design,” where it was used to support arguments for the existence of God and for the intelligent design of the universe.

The most famous statement of the teleological argument using the watchmaker analogy was given by William Paley in his 1802 book. The 1859 publication of Charles Darwin‘s theory of natural selection put forward an alternative explanation for complexity and adaptation, and so provided a counter-argument to the watchmaker analogy. Richard Dawkins referred to the analogy in his 1986 book The Blind Watchmaker giving his explanation of evolution.

In the United States, starting in the 1960s, creationists revived versions of the argument to dispute the concepts of evolution and natural selection, and there was renewed interest in the watchmaker argument.

I have always shied away from the argument based on the analogy, fallacy and argument, as I wanted to show my thoughts here regardless of what had been transmitted and exposed on an objective level argument. Can I do this without incurring the wrought of a perspective in society and share my own?

I mean even Dali covered the Tesseract by placing Jesus on the cross in a sense Dali was exposing something that such dimensional significance may have been implied as some degree of Einstein’s quote above? Of course I speculate but it always being held to some idea of a dimensional constraint that no other words can speak of it other then it’s science. Which brings me back to Einstein’s quote.

The construction of a hypercube can be imagined the following way:

  • 1-dimensional: Two points A and B can be connected to a line, giving a new line segment AB.
  • 2-dimensional: Two parallel line segments AB and CD can be connected to become a square, with the corners marked as ABCD.
  • 3-dimensional: Two parallel squares ABCD and EFGH can be connected to become a cube, with the corners marked as ABCDEFGH.
  • 4-dimensional: Two parallel cubes ABCDEFGH and IJKLMNOP can be connected to become a hypercube, with the corners marked as ABCDEFGHIJKLMNOP.

So for me it is about what lays at the basis of reality as to question that all our experiences, in some way masks the inevitable design at a deeper level of perceptions so as to say that such a diagram is revealing.

I operate from this principal given the understanding that all experience is part of the diagram of the logic of a visual reasoning in which such examples are dispersed upon our assessments of the day. While Einstein spoke, he had a reason from which such quote espoused the picture he had in his head?

Also too if I were to deal with the subjectivity of our perceptions then how could I ever be clear as I muddy the waters of such straight lines and such with all the pictures of a dream by Pauli?  I ask that however you look at the plainness of the dream expanded by Jung, that one consider the pattern underneath it all.  I provide 2 links below for examination.

This page lists the regular polytopes in Euclidean, spherical and hyperbolic spaces. Clicking on any picture will magnify it.

The Schläfli symbol notation describes every regular polytope, and is used widely below as a compact reference name for each.

The regular polytopes are grouped by dimension and subgrouped by convex, nonconvex and infinite forms. Nonconvex forms use the same vertices as the convex forms, but have intersecting facets. Infinite forms tessellate a one lower dimensional Euclidean space.

Infinite forms can be extended to tessellate a hyperbolic space. Hyperbolic space is like normal space at a small scale, but parallel lines diverge at a distance. This allows vertex figures to have negative angle defects, like making a vertex with 7 equilateral triangles and allowing it to lie flat. It cannot be done in a regular plane, but can be at the right scale of a hyperbolic plane.

See Also:

  • Pauli’s World Clock
  • Posted in Uncategorized | Tagged , , , , | Leave a comment

    Introduction to Ideas Roadshow Talks

    The Power of Principles – A conversation with Nima Arkani-Hamed

    And more Ideas Roadshow’s YouTube videos 

    See:

    Posted in Uncategorized | Tagged , | Leave a comment