Thursday, 13 May 2010

Mathematical Backing for Mirror Matter

Mirror Matter is an alternative dark matter candidate, in which a second copy of the all the known matter particles in universe, is also present in the universe, and provides the missing mass of the universe. I've recently written about some tentative experiment evidence of mirror matter. But although experiment rules in science, in physics, good mathematically justification for a theory, also seems to count for all lot. Previously Mirror Matter is justified because it restores the symmetry between left handed and right handed particles but why should a symmetry switching handedness of a particle, form a completely right handed different particle, is not obvious. However a recently paper, show this does indeed happen. It investigates the symmetry between left handed spin 1/2 particles, described by a mathematical object known as a spinor, in Matej Pavsic's new paper, he shows that using the Clifford Algebra CL(1,3), a symmetry operation from a left-handed standard model particle, indeed forms a mirror matter right-handed particle, and not a standard model right-handed particle. So mirror matter now has some solid mathematically justification between it. Warning you'll need to understand spinor maths and clifford algebra to understand the paper.

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