4 papers · 1 filter
Quantum Properties of Non-Dirichlet Boundary Conditions in Gravity
Patrick Draper, Manthos Karydas, Hao Zhang
The Euclidean path integral for gravity is enriched by the addition of boundaries, which provide useful probes of thermodynamic properties. Common boundary conditions include Diric…
Generalized Entanglement Capacity of de Sitter Space
Tom Banks, Patrick Draper
Near horizons, quantum fields of low spin exhibit densities of states that behave asymptotically like 1+1 dimensional conformal field theories. In effective field theory, imposing…
Breakdown of Field Theory in Near-Horizon Regions
Tom Banks, Patrick Draper, Manthos Karydas
We discuss back-reaction in the semiclassical treatment of quantum fields near a black hole. When the state deviates significantly from Hartle-Hawking, simple energetic considerati…
Path Integral Factorization and the Gravitational Effective Action
Patrick Draper, Szilard Farkas, Manthos Karydas
We discuss the factorization and continuity properties of fields in the Euclidean gravitational path integral with higher dimension operators constructed from powers of the Riemann…