Superluminal travel requires negative energies
Ken D. Olum
TL;DR
This paper discusses the theoretical requirements for superluminal travel, emphasizing the necessity of negative energy densities, and consolidates previous related works into a single comprehensive publication.
Contribution
It combines prior research on superluminal travel and negative energies into one unified analysis, clarifying the conditions needed for faster-than-light travel.
Findings
Negative energies are essential for superluminal travel.
Previous related works are now consolidated in a single publication.
Theoretical constraints on superluminal travel are discussed.
Abstract
The content of gr-qc/9805003 and gr-qc/9806091 now appears in a single paper in the archive under gr-qc/9805003, since these appeared as a single publication in Physical Review Letters.
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