Pk. Anastasovski et al., Runaway solutions of the Lehnert equations: The possibility of extracting energy from the vacuum, OPTIK, 111(9), 2000, pp. 407-409
It is shown that the Lehnert equations possess run-away solutions which, in
theory, result in infinite positive and negative vacuum energy in thermody
namic equilibrium. If this equilibrium is locally disturbed, an excess of p
otential energy and an excess rate of doing work by the vacuum is generated
in theory. This can be converted into thermal or mechanical energy without
violating Noether's theorem or the laws of thermodynamics.