致密物质中的鲁棒有限动量不稳定性
Robust Finite-Momentum Instabilities in Dense Matter
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中文总结 AI 辅助
本研究针对量子色动力学有效模型中致密物质的有限动量不稳定性问题，通过限制紫外正则化器处理范围，消除了正则化方案的人为影响，证明空间调制手征关联是致密介质的真实属性。
中文摘要 AI 辅助
量子色动力学有效模型中非均匀手征相的预测范围对紫外正则化极为敏感，这种敏感性在很大程度上是人为的。在两味道Nambu--Jona-Lasinio模型中，三维截断、Pauli--Villars和固有时间正则化的常规实现会产生差异显著的有限动量不稳定区域。然而，一旦将紫外正则化器限制为仅处理真正发散的真空贡献，三种方案会给出几乎完全相同的稳定性图，moat regime的起始以及后续的有限动量不稳定性在定量上变得鲁棒。明显的方案依赖性源于对与费米面响应相关的紫外有限介质贡献的正则化。本研究结果表明，空间调制的手征关联是致密介质的真实属性，而非紫外方案的人为产物。
英文摘要
The predicted extent of inhomogeneous chiral phases in effective models of quantum chromodynamics is notoriously sensitive to ultraviolet regularization. We show that this sensitivity is largely artificial. In the two-flavor Nambu--Jona-Lasinio model, conventional implementations of three-dimensional cutoff, Pauli--Villars, and proper-time regularization produce strongly different finite-momentum instability regions. Once ultraviolet regulators are restricted to genuinely divergent vacuum contributions, however, all three prescriptions yield nearly identical stability diagrams. Both the onset of the moat regime and the subsequent finite-momentum instability become quantitatively robust. The apparent scheme dependence originates from regulating ultraviolet-finite medium contributions associated with the Fermi-surface response. Our results identify spatially modulated chiral correlations as a genuine property of the dense medium rather than an artifact of the ultraviolet prescription.
