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Euler–Poincaré reduction in principal bundles by a subgroup of the structure group

✍ Scribed by Castrillón López, M.; García, P.L.; Rodrigo, C.

Book ID
122783605
Publisher
Elsevier Science
Year
2013
Tongue
English
Weight
480 KB
Volume
74
Category
Article
ISSN
0393-0440

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Nontrivial extensions of a massless repr
Nontrivial extensions of a massless representation with definite helicity of the Poincaré group in 3+1 dimensions by the tensor product of two other massless representations with definite helicity
✍ G. Rideau 📂 Article 📅 1988 🏛 Springer 🌐 English ⚖ 389 KB

Let Un(a, A) be a massless, helicity n/2, representation of the Poinear6 group in 3 + 1 dimensions. Un(a,A) is realized in an adapted nuclear space ~n. We explicitly determine the various classes of cohomology for the extension of Un(a, A) by Un1(a, A)| Un2(a, A).