Negative Energy and Mass

Negative mass or energy is of interest in (a) propulsion leaving planets, (b) warp drives,
and (c) possibility of extracting energy from quantum zero point states.

Extrapolation to negative mass in Newtonian Gravitation

Robert Forward (1990) Negative Matter Propulsion, J. Propulsion, Vol. 6 (1), pp 28-37 (copy)

Negative matter is a hypothetical form of matter whose active-gravitational, passive-gravitational, inertial, and rest masses are opposite in sign to normal, positive matter. Negative matter is not antimatter, which as far as is known has normal (positive) mass. If an object made of negative matter could be obtained and coupled by elastic, gravitational, or electromagnetic forces to an object containing an equal amount of positive matter, the interactions between the two objects would result in an unlimited amount of unidirectional acceleration of the combination without the requirement for an energy source or reaction mass. In this paper, it is shown in exhaustive detail that, despite their unbelievable propulsive capabilities, negative matter propulsion systems do not violate the Newtonian laws of conservation of linear momentum and energy. Thus, logical objections to the existence of negative matter must be found elsewhere than in Newtonian mechanics. Suggestions are made where evidence for the existence of negative matter might be found.

Extrapolation to negative energy in Quantum Theory

Eric Davis (2010) Quantum Tomography of Negative Energy States in the Vacuum, DIRD (copy)

Extrapolation to negative energy in General Relativity

Eric Davis (2010) Antigravity for Aerospace Applications, DIRD (copy)

Eric Davis (2010) Traversible Wormholes Stargates and Negative Energy, DIRD (copy)

Extrapolation to negative energy in other physics

F. Winterberg (2010) Negative Mass Propulsion, DIRD (copy)