Chiral condensates in quark and nuclear matter
Chiral condensates in quark and nuclear matter
复制标题
夸克和核物质中的手性凝聚
DOI:
10.1142/s0217751x03014046
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发表时间:
2003-04
期刊:
影响因子:
--
通讯作者:
姜焕清
中科院分区:
文献类型:
--
作者:
彭光雄;姜焕清
We present a novel treatment of calculating the in-medium quark condensates. The advantage of this approach is that one does not need to make further assumptions on the derivatives of model parameters with respect to the quark current mass. The normally accepted model-independent result in nuclear matter is naturally reproduced. The change of the quark-condensate induced by interactions depends on the incompressibility of nuclear matter. When it is greater than 265 MeV, the density at which the condensate vanishes is higher than that from the linear extrapolation. For the chiral condensate in quark matter, a similar model-independent linear behavior is found at lower densities, which means that the decreasing speed of the condensate in quark matter is merely half of that in nuclear matter if the pion-nucleon sigma commutator is six times the average current mass of a and d quarks. The modification due to QCD-like interactions is found to slow the decreasing speed of the condensate, compared with the linear extrapolation.
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DOI:
10.1103/physrevd.33.3349
发表时间:
1986-06
期刊:
Physical review. D, Particles and fields
影响因子:
--
作者:
Igi;Ōno
通讯作者:
Igi;Ōno
影响因子:
4.4
作者:
J. Richardson
通讯作者:
J. Richardson
DOI:
10.1016/0375-9474(92)90363-o
发表时间:
1992-02
期刊:
Nuclear Physics
影响因子:
--
作者:
M. Jaminon;R. M. Galain;G. Ripka;P. Stassart
通讯作者:
M. Jaminon;R. M. Galain;G. Ripka;P. Stassart
影响因子:
4.4
作者:
Alain J. Martin
通讯作者:
Alain J. Martin
影响因子:
4.4
作者:
H. Banerjee;B. Dutta-Roy
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H. Banerjee;B. Dutta-Roy