poincaré transformation
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2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
Luke Lippstreu

Abstract We generalize Zwanziger’s pairwise little group to include a boost subgroup. We do so by working in the celestial sphere representation of scattering amplitudes. We propose that due to late time soft photon and graviton exchanges, matter particles in the asymptotic states in massless QED and gravity transform under the Poincaré group with an additional pair of pairwise celestial representations for each pair of matter particles. We demonstrate that the massless abelian and gravitational exponentiation theorems are consistent with the proposed pairwise Poincaré transformation properties. For massless QED we demonstrate that our results are consistent with the effects of the Faddeev-Kulish dressing and the abelian exponentiation theorem for celestial amplitudes found in arXiv:2012.04208. We discuss electric and magnetic charges simultaneously as it is especially natural to do so in this formalism.



2014 ◽  
Vol 8 ◽  
pp. 2421-2425
Author(s):  
Jaime-Eduardo Jimenez-Sarmiento ◽  
Ana-Magnolia Marin-Ramirez ◽  
Ruben-Dario Ortiz-Ortiz




1977 ◽  
Vol 67 ◽  
pp. 121-138 ◽  
Author(s):  
Kenichi Shiraiwa

In his study of non-linear differential equations of the second order, N. Levinson [3] defined the dissipative systems (D-systems) which arise in many important cases in practice. To a dissipative system a transformation T: R2 → R2 called the Poincaré transformation is associated. Levinson used the Poincaré transformation in the qualitative study of dissipative systems, and he [3] and Massera [5] obtained certain equalities between the number of subharmonic solutions of a dissipative systems under suitable conditions. We call these the Levinson-Massera’s equalities.





1971 ◽  
Vol 3 (6) ◽  
pp. 1468-1485 ◽  
Author(s):  
Graham L. Tindle




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