PoS - Proceedings of Science
Volume 336 - XIII Quark Confinement and the Hadron Spectrum (Confinement2018) - D: Deconfinement
Study of deconfined quark matter at zero temperature and high density
N. Astrakhantsev, V. Bornyakov, V. Braguta, E.M. Ilgenfritz, A.Y. Kotov, A. Nikolaev* and A. Rothkopf
Full text: pdf
Pre-published on: September 12, 2019
Published on: September 26, 2019
We study the interactions among a static quark-antiquark pair in the presence of dense two-color quark matter within lattice simulations. To this end we compute Polyakov line correlation functions and determine the renormalized color-averaged, color-singlet and color-triplet grand potentials. The color-singlet grand potential allows us to elucidate the number of quarks induced by a static quark antiquark source, as well as the internal energy of such a pair in dense quark matter. We furthermore determine the screening length, which in the confinement phase is synonymous with the string breaking distance. The screening length is a decreasing function of baryon density, due to the possibility to break the interquark string via a scalar diquark condensate at high density. We also study the large distance properties of the color singlet grand potential in a dense medium and find that it is well described by a simple Debye screening formula, parameterized by a Debye mass and an effective coupling constant. The latter is of order of unity, thus even at large density two-color quark matter is a strongly correlated system.
DOI: https://doi.org/10.22323/1.336.0154
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.