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arXiv 0905.4397hep-phastro-ph.HEnucl-th
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具有关联的自旋极化夸克物质的基态能量

Ground state energy of spin polarized quark matter with correlation

Kausik Pal, Subhrajyoti Biswas, Abhee K. Dutt-Mazumder

摘要:

我们用关联能$(E_{corr})$修正了冷态和密态自旋极化夸克物质的基态能量。表达式$E_{corr}$在非相对论和超相对论制度已被推导和比较的交换和动力学项中存在的微扰系列。据观察,包括相关能并不排除铁磁相变的可能性,在低密度内Tatsumi \cite{tatsumi00}提出的模型。我们还导出了这种自旋极化物质在高密度极限下的自旋刚度常数。

英文摘要:

We calculate the ground state energy of cold and dense spin polarized quark matter with corrections due to correlation energy $(E_{corr})$. Expressions for $E_{corr}$ both in the non-relativistic and ultra-relativistic regimes have been derived and compared with the exchange and kinetic term present in the perturbation series. It is observed that the inclusion of correlation energy does not rule out the possibility of the ferromagnetic phase transition at low density within the model proposed by Tatsumi\cite{tatsumi00}. We also derive the spin stiffness constant in the high density limit of such a spin polarized matter.

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