Regularized black holes from doubled FLRW cosmologies
Regularized black holes from doubled FLRW cosmologies
Reduced general relativity for four-dimensional spherically symmetric stationary space-times, more simply called the black hole minisuperspace, was shown in previous work to admit a symmetry under the three-dimensional Poincar\'e group $\mathrm{ISO}(2,1)$. Such a nonsemisimple symmetry group usually signals that the system is a special case of a more general model …