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arXiv · 1207.6523

On the intrinsic width of the chromoelectric flux tube in finite temperature LGTs

Michele Caselle·Paolo Grinza
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Abstract

We propose three different lattice operators to measure the intrinsic width ξ_I of the chromoelectric flux tube in pure lattice gauge theories. In order to test these proposals we evaluate them for SU(2) and Ising LGTs in (2+1) dimensions in the vicinity of the deconfinement transition. Using dimensional reduction, we could perform the calculation in the effective 2d spin model using standard S-matrix techniques. We consistently found the same result for the three lattice operators. This result can be expressed in terms of the finite temperature string tension as follows ξ_I=\frac{T}{2σ(T)} and implies that the intrinsic width of the flux tube diverges as the deconfinement transition is approached.

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Michele Caselle, Paolo Grinza. 2012-11-15. On the intrinsic width of the chromoelectric flux tube in finite temperature LGTs. https://doi.org/10.1007/jhep11(2012)174

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