Abstract
Abstract
Causality constrains the gravitational interactions of massive higher spin particles in both AdS and flat spacetime. We explore the extent to which these constraints apply to composite particles, explaining why they do not rule out macroscopic objects or hydrogen atoms. However, we find that they do apply to glueballs and mesons in confining large N gauge theories. Assuming such theories contain massive bound states of general spin, we find parametric bounds in (3 + 1) spacetime dimensions of the form
$$ N\lesssim \frac{M_{Pl}}{\Lambda_{\mathrm{QCD}}} $$
N
≲
M
Pl
Λ
QCD
relating N, the QCD scale, and the Planck scale. We also argue that a stronger bound replacing ∧QCD with the UV cut-off scale may be derived from eikonal scattering in flat spacetime.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference33 articles.
1. S. Weinberg, Infrared photons and gravitons, Phys. Rev.140 (1965) B516 [INSPIRE].
2. P. Benincasa and F. Cachazo, Consistency conditions on the S-matrix of massless particles,
arXiv:0705.4305 [INSPIRE].
3. N. Afkhami-Jeddi, S. Kundu and A. Tajdini, A bound on massive higher spin particles, JHEP04 (2019) 056 [arXiv:1811.01952] [INSPIRE].
4. J.D. Bekenstein, A universal upper bound on the entropy to energy ratio for bounded systems, Phys. Rev.D 23 (1981) 287 [INSPIRE].
5. H. Casini, Relative entropy and the Bekenstein bound, Class. Quant. Grav.25 (2008) 205021 [arXiv:0804.2182] [INSPIRE].
Cited by
11 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献