The deformation-stability fundamental length and deviations from c

Details The deformation-stability fundamental length and deviations from c The deformation-stability fundamental length and deviations from c

2011-12-14

arxiv.org/abs/1112.3246v1

Physics

High Energy Physics

High Energy Physics - Theory

12 pages Latex

Scientific paper

The existence of a fundamental length (or fundamental time) has been conjectured in many contexts. However, the "stability of physical theories principle" seems to be the one that provides, through the tools of algebraic deformation theory, an unambiguous derivation of the stable structures that Nature might have chosen for its algebraic framework. It is well-known that $1/c$ and $\hbar $ are the deformation parameters that stabilize the Galilean and the Poisson algebra. When the stability principle is applied to the Poincar\'{e}-Heisenberg algebra, two deformation parameters emerge which define two length (or time) scales. In addition there are, for each of them, a plus or minus sign possibility in the relevant commutators. One of the deformation length scales, related to non-commutativity of momenta, is probably related to the Planck length scale but the other might be much larger. In this paper this is used as a working hypothesis to compute deviations from $c$ in speed measurements of massless wave packets.

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