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arXiv · 1910.12508

Ghost-free resummation of gravitational interactions of a 2-form gauge field

Kazufumi Takahashi·Daisuke Yoshida
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Abstract

We find that the recently-proposed ghost-free interaction of a 2-form gauge field in four dimensions, which contains derivative couplings in a nonperturbative manner, can be regarded as a resummation of ghostly interaction terms. We investigate the higher derivative structure of this model in a minisuperspace description and demonstrate that the higher derivative terms can be removed by taking appropriate combinations of the Euler-Lagrange equations, while a truncation at a finite order spoils this structure. We also show that this nature is peculiar to four dimensions.

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Kazufumi Takahashi, Daisuke Yoshida. 2019-10-28. Ghost-free resummation of gravitational interactions of a 2-form gauge field. https://doi.org/10.1103/physrevd.101.024049

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