5 papers · 1 filter
extremal surfaces, replicas, boundary Renyi entropies in and time entanglement
Kanhu Kishore Nanda, K. Narayan, Somnath Porey +1
We develop further previous work on de Sitter extremal surfaces and time entanglement structures in quantum mechanics. In the first part, we first discuss explicit quotient geometr…
No-boundary extremal surfaces in slow-roll inflation and other cosmologies
Kaberi Goswami, K. Narayan, Gopal Yadav
Building on previous work on de Sitter extremal surfaces anchored at the future boundary, we study no-boundary extremal surfaces in slow-roll inflation models, with perturbations t…
Cosmological singularities, holographic complexity and entanglement
K. Narayan, Hitesh K. Saini, Gopal Yadav
We study holographic volume complexity for various families of holographic cosmologies with Kasner-like singularities, in particular with , hyperscaling violating and Lifshitz…
Small Schwarzschild de Sitter black holes, the future boundary and islands
Kaberi Goswami, K. Narayan
We continue the study of 4-dimensional Schwarzschild de Sitter black holes in the regime where the black hole mass is small compared with the de Sitter scale, following arXiv:2207.…
Further remarks on de Sitter space, extremal surfaces and time entanglement
K. Narayan
We develop further the investigations in arXiv:2210.12963 [hep-th] on de Sitter space, extremal surfaces and time entanglement. We discuss the no-boundary de Sitter extremal surfac…