Positivity bounds and the massless spin-2 pole

Positivity bounds and the massless spin-2 pole
复制标题

正界和无质量自旋 2 极

DOI:
10.1103/physrevd.102.125023
复制
发表时间:
2020
期刊:
影响因子:
5
通讯作者:
Alberte L
Alberte L
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Alberte L

文献摘要

参考文献

被引文献

相似文献

有效场理论中无质量自旋 2 场的存在导致散射振幅中的通道极点,从而排除了标准正性边界的应用。尽管如此,最近基于压缩到三个维度的争论表明,正边界可以应用于通道极点减去幅度。如果正确的话,这将对紫外线物理学和弱重力猜想产生深远的影响。在与引力耦合的简单可重整场论的背景下,我们发现应用这些参数将以与其实际值不相容的方式限制低能耦合常数。这种矛盾持续存在,导致理论变形。在这种与引力耦合的通用可重整有效理论上进一步加强通道极减去正性界限将意味着参数规模比预期更小的新物理学,具有深远的影响。这表明,一般来说,标准正性界限不适用于重力,并且我们强调了一些影响三维振幅公式的问题,该三维振幅同时满足分析性、正性和交叉对称性所需的属性。我们推测应该独立于高能完成的精确细节来满足修改后的界限。
The presence of a massless spin-2 field in an effective field theory results in a-channel pole in the scattering amplitudes that precludes the application of standard positivity bounds. Despite this, recent arguments based on compactification to three dimensions have suggested that positivity bounds may be applied to the-channel pole subtracted amplitude. If correct, this would have deep implications for UV physics and the weak gravity conjecture. Within the context of a simple renormalizable field theory coupled to gravity we find that applying these arguments would constrain the low-energy coupling constants in a way which is incompatible with their actual values. This contradiction persists on deforming the theory. Further enforcing the-channel pole subtracted positivity bounds on such generic renormalizable effective theories coupled to gravity would imply new physics at a scale parametrically smaller than expected, with far-reaching implications. This suggests that generically the standard positivity bounds are inapplicable with gravity, and we highlight a number of issues that impinge on the formulation of a three-dimensional amplitude which simultaneously satisfies the required properties of analyticity, positivity, and crossing symmetry. We conjecture instead a modified bound that ought to be satisfied independently of the precise details of the high energy completion.
改善积极界限和巨大的重力
DOI: 10.1007/jhep04(2018)083
发表时间: 2017
影响因子: 5.4
作者:
C. Rham;S. Melville;A. Tolley
通讯作者: A. Tolley
DOI: 10.1016/0370-2693(92)91038-b
发表时间: 1992
期刊: Physics Letters B
影响因子: 4.4
作者:
M. Ciafaloni
通讯作者: M. Ciafaloni
巨大的伽利略正性界限
DOI: 10.1007/jhep09(2017)072
发表时间: 2017
影响因子: 5.4
作者:
C. Rham;S. Melville;A. Tolley;Shuang
通讯作者: Shuang
旋转粒子的柔软度和振幅的正值
DOI: --
发表时间: 2016
期刊:
影响因子: --
作者:
B. Bellazzini
通讯作者: B. Bellazzini
超越积极性界限和大重力的命运。
DOI: --
发表时间: 2017
影响因子: 8.6
作者:
B. Bellazzini;F. Riva;J. Serra;F. Sgarlata
通讯作者: F. Sgarlata