How much negative energy does a wormhole need?

1999/05/31 by Daisuke Ida, Sean A. Hayward · 1 citation
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Einstein #Energy (signal processing) #Energy condition #Negative energy #Negative mass #Wormhole #gr-qc

paper · pdf · doi:10.1016/s0375-9601(99)00518-6

published as Phys.Lett. A260 (1999) 175-181 · 6 pages, no figures

openalex publication_date 1999/09/01 · arxiv created 1999/11/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

It is known that traversible wormholes require negative energy density. We here argue how much negative energy is needed for wormholes, using a local analysis which does not assume any symmetry. and in particular allows dynamic (non-stationary) but non-degenerate wormholes. We find that wormholes require two constraints on the energy density, given by two independent components of the Einstein equation.

Citations

• Wormholes in spacetime and their use for interstellar travel: A tool for teaching general relativity
• Unified first law of black-hole dynamics and relativistic thermodynamics
• Wormholes, Time Machines, and the Weak Energy Condition
• Traversable wormholes: Some simple examples

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