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      Net baryon number fluctuations across the chiral phase transition at finite density in the strong coupling lattice QCD

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          Abstract

          We investigate the net-baryon number fluctuations across the chiral phase transition at finite density in the strong coupling and chiral limit. Mesonic field fluctuations are taken into account by using the auxiliary field Monte-Carlo method. We find that the higher-order cumulant ratios, \(S\sigma\) and \(\kappa\sigma^2\), show oscillatory behavior around the phase boundary at \(\mu/T\gtrsim 0.2\), and there exists the region where the higher-order cumulant ratios are negative. The negative region of \(\kappa\sigma^2\) is found to shrink with increasing lattice size. This behavior agrees with the expectations from the scaling analysis.

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          Author and article information

          Journal
          2015-07-16
          2015-07-28
          Article
          10.1093/ptep/ptv141
          1507.04527
          8f9e4c2a-7ceb-4ea3-9d05-3a16bd2ac203

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          KUNS-2568, YITP-15-58
          PTEP 2015 (2015) 113D01
          16 pages, 5 figures
          hep-lat hep-ph nucl-th

          High energy & Particle physics,Nuclear physics
          High energy & Particle physics, Nuclear physics

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