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arXiv 1006.4130gr-qc
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理想流体:场论描述和规范对称性问题

Perfect fluids: Field-theoretical description and gauge symmetry issue

Nikolai V. Mitskievich

摘要:

我们表明,组合(一般来说,非线性)2-和3-形式的字段类似的麦克斯韦(1-形式)字段,完全描述完美的流体,包括旋转的。在非旋转的情况下,充分的2型场和自由的3型场被证明等价于爱因斯坦方程中宇宙项的出现(平方根非线性对应于$Λ=0$)。当包含旋转时,规范自由度就崩溃了,但即使它们存在,也显然不能实现2-形式场和温伯格最近声称的无质量标量场的等价。

英文摘要:

We show that combinations of (in general, non-linear) 2- and 3-form fields analogous to the Maxwell (1-form) field, completely describe perfect fluids, including the rotating ones. In the non-rotating case, the 2-form field in sufficient, and a free 3-form field proves to be equivalent to appearance of the cosmological term in Einstein's equations (the square-root non-linearity corresponding to $Λ=0$). The gauge degrees of freedom break down when a rotation is included, but even when they exist, there obviously fails to be realized an equivalence of the 2-form field and the massless scalar one recently claimed by Weinberg.

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