Stress-energy-momentum requirements of practical warp bubbles

Ascertain the realistic stress-energy-momentum magnitude and distribution required to construct and operate positive-energy, energy-condition-respecting general relativistic warp bubble spacetimes, in order to quantify the intrinsic emission intensities during travel and provide accurate detectability estimates.

Background

The paper presents preliminary estimates for electromagnetic and gravitational technosignatures from a coasting warp bubble but emphasizes that realistic intensity predictions require knowledge of the sourcing stress-energy-momentum (SEM) of the bubble.

While recent work has identified physical (positive-energy) warp drive solutions satisfying energy conditions, the practical SEM requirements for such bubbles remain uncertain, limiting the authors’ ability to estimate intrinsic resonant emission intensity and observability ranges.