Net baryon number fluctuations across the chiral phase transition at finite density in the strong coupling lattice QCD
| Autor: | Terukazu Ichihara, Kenji Morita, Akira Ohnishi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Phase boundary Field (physics) Condensed matter physics Nuclear Theory High Energy Physics - Lattice (hep-lat) FOS: Physical sciences General Physics and Astronomy Lattice QCD Nuclear Theory (nucl-th) Auxiliary field High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) High Energy Physics - Lattice Baryon number Limit (mathematics) Cumulant Scaling |
| Zdroj: | Progress of Theoretical and Experimental Physics |
| Popis: | 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. Comment: 16 pages, 5 figures |
| Databáze: | OpenAIRE |
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