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- Eric A. Bergshoeff, Teake A. Nutma, Iwein De Baetselier
- 2008

We show how, using different decompositions of E 11 , one can calculate the representations under the duality group of the so–called " deform " potentials. Evidence is presented that these potentials are in one-to-one correspondence to the embedding tensors that classify the gaugings of all maximal gauged supergravities. We supply the computer program… (More)

- Eric A. Bergshoeff, Joaquim Gomis, Teake A. Nutma, Diederik Roest
- 2008

We establish the correspondence between, on one side, the possible gaugings and massive deformations of half–maximal supergravity coupled to vector multiplets and, on the other side, certain generators of the associated very extended Kac–Moody algebras. The difference between generators associated to gaugings and to massive deformations is pointed out.… (More)

- Eric A. Bergshoeff, Olaf Hohm, Axel Kleinschmidt, Hermann Nicolai, Teake A. Nutma
- 2009

We compare the dynamics of maximal three-dimensional gauged supergravity in appropriate truncations with the equations of motion that follow from a one-dimensional E 10 /K(E 10) coset model at the first few levels. The constant embedding tensor, which describes gauge deformations and also constitutes an M-theoretic degree of freedom beyond… (More)

We present the tensor computer algebra package xTras, which provides functions and methods frequently needed when doing (classical) field theory. Amongst others, it can compute contractions, make Ansätze, and solve tensorial equations. It is built upon the tensor computer algebra system xAct, a collection of packages for Mathematica. Program summary Program… (More)

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