The confining string beyond the free-string approximation in the gauge dual of percolation

Details The confining string beyond the free-string approximation in the gauge dual of percolation The confining string beyond the free-string approximation in the gauge dual of percolation

2009-01-07

arxiv.org/abs/0901.0748v1

JHEP 0903:104,2009

Physics

High Energy Physics

High Energy Physics - Lattice

13 pages, 3 figures

Scientific paper

10.1088/1126-6708/2009/03/104

We simulate five different systems belonging to the universality class of the gauge dual of three-dimensional random percolation to study the underlying effective string theory at finite temperature. All the data for the finite temperature string tension, when expressed by means of adimensional variables, are nicely described by a unique scaling function. We calculate the first few terms of the string tension up to order $T^6$ and compare to different theoretical predictions. We obtain unambiguous evidence that the coefficients of $T^2$ and $T^4$ terms coincide with those of the Nambu-Goto string, as expected, while the $T^6$ term strongly differs and is characteristic of the universality class of this specific gauge theory.

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