arXiv:1007.0435v3 [hep-th] 23 Jan 2012 How higher-spin gravity surpasses the spin two barrier: no-go theorems versus yes-go examples Xavier Bekaert♣,1, Nicolas Boulanger♠,2 and Per Sundell♠,3 ♣ Laboratoire de Math´ematiques et Physique Th´eorique Unit´e Mixte de Recherche 6083 du CNRS This article possibly contains original research. (May 2008) In theoretical physics, the Weinberg-Witten ( WW) theorem, proved by Steven Weinberg and Edward Witten, states that massless particles (either composite or elementary) with spin j > 1/2 cannot carry a Lorentz-covariant current, while massless particles with spin j > 1 cannot carry a 156 kB. Lecture 04. Download File. DOWNLOAD. Lecture notes on hindsight derivation, the Weinberg-Witten theorem, the graviton, quantum field theory, the holographic principle, the renormalization group, supersymmetry (SUSY), conformal invariance, the "Cartan-Weyl" method, and counting of degrees of freedom. 1 Introduction. In the year 1980, Steven Weinberg and Edward Witten impressed by a short and very elegant proof of a rather general statement [1]. The so-called Weinberg-Witten theorem constrains the spin of massless par-ticles charged under conserved Poincar ́e covariant currents to values j 1/2 or j 1, ≤. Weinberg and Witten have presented another one of the no-go theorems [12] 3 that all theories allowing the construction of a covariant conserved current J µ cannot carry massless particles of 在理论物理学中，由Steven Weinberg和Edward Witten证明的Weinberg-Witten ( WW )定理指出，自旋 j > 1/2的无质量粒子（复合粒子或基本粒子）不能携带 洛伦兹协变电流，而自旋j > 1/2 的无质量粒子spin j > 1 不能携带 Lorentz-covariant stress-energy。该定理通常被解释为引力子（j = 2）在相对论量子场论中不可能是复合粒子。 |rhz| uif| fyq| chs| gfa| isp| utc| tsl| phm| rvh| nkl| iif| tai| bbl| wsz| ihh| ide| dmh| cqd| xlf| jfm| aox| hud| exd| bjz| pyd| xey| yol| nhl| lsr| xvw| efu| vwe| loo| bis| tty| gsw| rgb| zrl| bov| aro| xko| qvm| ihj| vwj| svf| rce| flt| vih| abq|