有限温度和密度下夸克物质中的自旋极化与手征凝聚
Spin Polarized versus Chiral Condensate in Quark Matter at Finite Temperature and Density
摘要：
在量子色动力学的低能有效理论Nambu-Jona-Lasinio型模型中，由于张量型四点相互作用，在重子密度高、温度低的情况下，夸克物质中出现了自旋极化凝聚.结果表明，在该低能有效模型中，随着夸克数密度的增加，自旋极化凝聚体再次破坏了手征对称性，而当夸克数密度达到一定值时，手征凝聚体消失了，出现了手征对称性恢复.
英文摘要：
It is shown that the spin polarized condensate appears in quark matter at high baryon density and low temperature due to the tensor-type four-point interaction in the Nambu-Jona-Lasinio-type model as a low energy effective theory of quantum chromodynamics. It is indicated within this low energy effective model that the chiral symmetry is broken again by the spin polarized condensate as increasing the quark number density, while the chiral symmetry restoration occurs in which the chiral condensate disappears at a certain density.
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