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to an extraordinarily high degree of precision — the technical term for that is “fine tuning.”) Naturalness, to physicists, cheap real jordans , means no (or very little) fine tuning. A nice historical illustration of this concept comes from Jonathan Feng, cheap retro jordans , of the University of California, cheap wholesale jordans , Irvine, in a recent article in the Annual Review of Nuclear and Particle Science. It turns out that Isaac Newton himself articulated the meaning of naturalness in response to a question about how the universe could be static. (In those days, nobody knew the universe was expanding.) If all masses attracted, cheap Authentic jordans , why wouldn’t everything in the universe be moving closer and closer together? Newton replied that it was indeed a very unnatural state of affairs. A mass would have to be placed precisely at the center of all other masses, cheap jordans free shipping , attracted equally in all directions, to remain motionless. Achieving such a state, cheap jordans online , Newton said, would be “fully as hard as to make the sharpest needle stand upright on its point upon a looking-glass.” Newton’s solution was to suppose that some divine power had established the precisely proper (and finely tuned) initial conditions to sustain a static infinite universe. But that was a supernatural explanation, not a natural one. In the Higgs case, a prime candidate for a natural explanation was supersymmetry, cheap jordans for sale , aka SUSY. SUSY adds a new set of subatomic particles into the mix, http://cheapjordansstock.com , one superpartner for each previously known particle. When the presence of the superparticles is accommodated in the equations, the Higgs mass comes out just right — SUSY required it http://www.sucre-info.com/./index.php http://www.regards-publicite.com/ http://www.midwestartfairs.com/node/add/article |