Positivity and dense matter
Positivity and dense matter
复制标题
正性和致密物质
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
S. Hsu
中科院分区：
文献类型：
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作者：
D. Hong;S. Hsu
我们详细阐述了以前关于稠密费米子物质中低能模的欧几里得路径积分测度正性的结果。我们证明，如果只考虑低能自由度，通常与费米子有关的符号问题是不存在的。我们描述了一种在晶格上模拟稠密QCD的方法，并用严格的不等式证明了色味锁定(CFL)相是三味无质量QCD的真真空。我们还讨论了凝聚态在电子系统中的应用，如广义Hubbard模型。
We elaborate on previous results concerning the positivity of the Euclidean path integral measure for low-energy modes in dense fermionic matter. We show that the sign problem usually associated with fermions is absent if one considers only low-energy degrees of freedom. We describe a method for simulating dense QCD on the lattice and give a proof using rigorous inequalities that the color-flavor locked (CFL) phase is the true vacuum of three flavor, massless QCD. We also discuss applications to electronic systems in condensed matter, such as generalized Hubbard models.