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arXiv 2007.15912hep-thmath-phmath.MP
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从BFV到BV与时空协方差

From BFV to BV and spacetime covariance

Noriaki Ikeda, Thomas Strobl

摘要:

给定规范理论的BFV公式通常比BV公式容易得多。格里戈里耶夫和达姆加德介绍了从前者获得后者的简单公式。然而,由于BFV依赖于规范理论的哈密顿版本,因此一般来说,由此产生的BV理论不表现出时空协变性也就不足为奇了。我们提供了一个明确的例子,这种现象在两个时空维度,并显示如何恢复协方差的BV数据,通过改进Grigoriev-Damgaard程序与适当的适应其原始公式。

英文摘要:

The BFV formulation of a given gauge theory is usually significantly easier to obtain than its BV formulation. Grigoriev and Damgaard introduced simple formulas for obtaining the latter from the former. Since BFV relies on the Hamiltonian version of the gauge theory, however, it does not come as a surprise that in general the resulting BV theory does not exhibit space-time covariance. We provide an explicit example of this phenomenon in two spacetime dimensions and show how to restore covariance of the BV data by improving the Grigoriev--Damgaard procedure with appropriate adaptations of its original formulas.

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