arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1609.06557hep-thgr-qc
收藏

新的双引力

New Bi-Gravities

Amin Akhavan, Ali Naseh, Azadeh Nemati, Ahmad Shirzad

摘要:

我们证明了临界引力及其高维扩展中的鬼问题可以通过对存在于这些理论作用中的对称二阶辅助场赋予动力学来解决。这些新的双引力,在线性水平周围的AdS真空,是免费的Boulware-Deser鬼,动力学鬼和快子不稳定性的特定参数范围内。此外,我们还证明了在相同的参数范围内,这些新模型的AdS-Schwarzschild黑洞解的能量和熵都是正的。这可能是这些新模型在非线性水平上也没有鬼不稳定性的标志。

英文摘要:

We show that the problem of ghosts in critical gravity and its higher dimensional extensions can be resolved by giving dynamics to the symmetric rank two auxiliary field existing in the action of these theories. These New Bi-Gravities, at linear level around the AdS vacuum, are free of Boulware-Deser ghost, kinetic ghost and tachyonic instability within the particular range of parameters. Moreover, we show that the energy and entropy of AdS-Schwarzschild black hole solutions of these new models are positive in the same range of parameters. This may be the sign that these new models are also free of ghost instabilities at the non-linear level.

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。

↑