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hep-th2018
A No-go Theorem for a Gauge Vector as a Space-time Goldstone
Remko Klein, Emanuel Malek, Diederik Roest +1
Scalars and fermions can arise as Goldstone modes of non-linearly realised extensions of the Poincare group (with important implications for the soft limits of such theories): the…
hep-th2017★ 28 cited
Spontaneously Broken Spacetime Symmetries and the Role of Inessential Goldstones
Remko Klein, Diederik Roest, David Stefanyszyn
In contrast to internal symmetries, there is no general proof that the coset construction for spontaneously broken spacetime symmetries leads to universal dynamics. One key differe…