Null energy condition and superluminal propagation
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5 citations
Cites background from "Null energy condition and superlumi..."
...It has also been argued that violation of NEC in certain models of ghost condensation are pathological due to the existence of superluminal instabilities [8]....
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5 citations
Cites methods from "Null energy condition and superlumi..."
...A more efficient method of three-point functions is considered in section 4, where all the coefficients are computed analytically and non-perturbatively, and we also discuss the monotonicity properties of the (17)The authors of [87] considered an effective field theory approach [88, 89] to non-dissipative uncharged second-order hydrodynamics....
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5 citations
Cites background from "Null energy condition and superlumi..."
...[1]), and so the same conclusions apply to vortex lines in relativistic fluids as well....
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...Indeed, there exists a duality between vorticity-free ordinary fluids and superfluids that holds directly at the level of the action, in the relativistic case as well [1]....
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References
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