Existence, uniqueness and L2t(H2x) ∩ L∞t(H1x) ∩ H1t(L2x) regularity of the gradient flow of the Ambrosio–Tortorelli functionalTommaso CortopassiESAIM: COCV, 30 (2024) 70DOI: https://doi.org/10.1051/cocv/2024060