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hep-th2025
On the phase of the de Sitter density of states
Yiming Chen, Douglas Stanford, Haifeng Tang +1
The one-loop gravitational path integral around Euclidean de Sitter space has a complex phase that casts doubt on a state counting interpretation. Recently, it was proposed t…
hep-th2025
Cusps in 3d gravity
Douglas Stanford, Cynthia Yan
Three dimensional hyperbolic manifolds have accumulation points in the spectrum of their volumes, leading to a divergence in the sum over topologies. The limit points are cusped hy…
quant-ph2025
Growth and collapse of subsystem complexity under random unitary circuits
Jeongwan Haah, Douglas Stanford
For chaotic quantum dynamics modeled by random unitary circuits, we study the complexity of reduced density matrices of subsystems as a function of evolution time where the initial…