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Problems with wormholes which involve arbitrarily small amounts of exotic matter
C. J. Fewster, T. A. Roman
A quantum inequality bound on the expectation value of the null-contracted stress tensor in an arbitrary Hadamard state is used to obtain constraints on the geometries of traversab…
On wormholes with arbitrarily small quantities of exotic matter
C. J. Fewster, T. A. Roman
Recently several models of traversable wormholes have been proposed which require only arbitrarily small amounts of negative energy to hold them open against self-collapse. If the…
Quantum Energy Inequalities and Stability Conditions in Quantum Field Theory
Christopher J. Fewster
We give a brief review of quantum energy inequalities (QEIs) and then discuss two lines of work which suggest that QEIs are closely related to various natural properties of quantum…
Energy Inequalities in Quantum Field Theory
Christopher J. Fewster
Quantum fields are known to violate all the pointwise energy conditions of classical general relativity. We review the subject of quantum energy inequalities: lower bounds satisfie…