Compact sources and cosmological horizons in lower dimensional bootstrapped Newtonian gravity
arXiv:2008.13465 · doi:10.1088/1361-6382/abe42e
Abstract
We study the bootstrapped Newtonian potential generated by a localised source in one and two spatial dimensions, and show that both cases naturally lead to finite spatial extensions of the outer vacuum. We speculate that this implies the necessary existence of a cosmological (particle) horizon associated with compact sources. In view of the possible dimensional reduction occurring in ultra-high energy processes - like scatterings at Planckian energies, the gravitational collapse of compact objects or the end-point of black hole evaporation - one can consider such lower-dimensional "bubbles" immersed in our Universe as describing (typically Planckian size) baby universes relevant to those dynamics.
19 pages, 5 figures, to appear in Class. Quant. Grav
References in corpus (15)
- Light rings as observational evidence for event horizons: long-lived modes, ergoregions and nonlinear instabilities of ultracompact objects
- Fast Radio Bursts and White Hole Signals
- Matter and gravitons in the gravitational collapse
- Effective Fluid Description of the Dark Universe
- Diffusion in quantum geometry
- Black Hole Masses are Quantized
- Black Holes as Critical Point of Quantum Phase Transition
- Quantum black holes in bootstrapped Newtonian gravity
- First M87 Event Horizon Telescope Results and the Role of ALMA
- Effective metric outside bootstrapped Newtonian sources
- Self-Consistent, Self-Coupled Scalar Gravity
- Polytropic stars in bootstrapped Newtonian gravity
- Vanishing dimensions: Review
- Revisiting the minimum length in the Schwinger-Keldysh formalism
- Sub-Planckian black holes and the Generalized Uncertainty Principle