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arXiv 1603.07307hep-th
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高维非酉CFTs的$C_T$

$C_T$ for Non-unitary CFTs in Higher Dimensions

Hugh Osborn, Andreas Stergiou

摘要:

确定了具有四阶和六阶导数动力学项的非么正标量CFTs的共形能量-动量张量两点函数的系数$C_T$。结果与在特定偶数维中由$O(N)$非线性sigma和Gross-Neveu模型产生的CFTs的大$N$计算的预期结果相匹配。$C_T$还计算了由$(n-1)$形式规范场在$2n+2$维中具有导数的CFT。结果$(n-1)$形式的理论扩展到一般尺寸作为一个非规范不变的CFT也得到了所产生的$C_T$不同于规范不变的理论。本文还讨论了通过减去低维原色的后代来构造共形原色的问题。对于自由理论,这也导致了能量-动量张量的另一种构造,这对于高阶导数理论来说是相当复杂的。

英文摘要:

The coefficient $C_T$ of the conformal energy-momentum tensor two-point function is determined for the non-unitary scalar CFTs with four- and six-derivative kinetic terms. The results match those expected from large-$N$ calculations for the CFTs arising from the $O(N)$ non-linear sigma and Gross-Neveu models in specific even dimensions. $C_T$ is also calculated for the CFT arising from $(n-1)$-form gauge fields with derivatives in $2n+2$ dimensions. Results for $(n-1)$-form theory extended to general dimensions as a non-gauge-invariant CFT are also obtained; the resulting $C_T$ differs from that for the gauge-invariant theory. The construction of conformal primaries by subtracting descendants of lower-dimension primaries is also discussed. For free theories this also leads to an alternative construction of the energy-momentum tensor, which can be quite involved for higher-derivative theories.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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