标题： 低温核物质中超阶网子数涨落 显示英文标题

标题： Hyperorder net baryon number fluctuations in nuclear matter at low temperature

摘要： 我们计算了由核物质相互作用引起的净重子数密度涨落，直至六阶，并探讨了它们与核液体-气体相变（LGPT）的关系，包括稳定相和亚稳相以及远离相变区域的部分。 结果表明，在LGPT附近存在剧烈的密度涨落，高阶密度涨落比低阶密度涨落对核物质的相互作用和结构性质更为敏感。 研究还表明，即使远离LGPT的临界区域，强子相互作用仍可导致显著的高阶密度涨落。 结合从实验数据拟合出的化学冻结线，所得结果可用于研究手征相变、核LGPT以及相关实验信号的分析。 显示英文摘要

摘要： We calculate the density fluctuations of net baryon number up to sixth order induced by the interactions of nuclear matter, and explore their relationship with the nuclear liquid-gas phase transition (LGPT), including the stable and metastable phase as well as the region far from the phase transition. The results show that dramatic density fluctuations exist in the vicinity of LGPT, and the hyperorder density fluctuations are more sensitive than the lower order ones to the interactions and structural properties of nuclear matter. The study also indicates that, even far away from the critical region of LGPT, the hadronic interactions can still lead to significant hyperorder density fluctuations. In combination with the chemical freeze-out line fitted from the experimental data, the derived results can be referred to investigate the chiral phase transition, nuclear LGPT, as well as the analysis of related experimental signals.