2000/07/31 by Irit Maor, Ram Brustein, Paul J. Steinhardt · 4 citations
Physics and Astronomy · #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Current (fluid) #Dark energy #Equation of state #Galaxies: Formation, Evolution, Phenomena #Galaxy #Gamma-ray bursts and supernovae #Luminosity #Luminosity distance #Metric expansion of space #Physics #Quantum mechanics #Statistical physics #Supernova #Universe #Variation (astronomy) #astro-ph #hep-ph
paper · pdf · doi:10.1103/physrevlett.86.6
published as Phys.Rev.Lett.86:6,2001; Erratum-ibid.87:049901,2001 · 4 pages, 2 figures; corrected figure 1 (compared to preprint and published versions) and minor changes to text
openalex publication_date 2001/01/01 · arxiv created 2001/05/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Supernova searches have been been suggested as a method for determining precisely the current value and time variation of the equation of state, w, of the dark energy component responsible for the accelerated expansion of the Universe. We show that the method is fundamentally limited by the fact that luminosity distance depends on w through a multiple integral relation that smears out information about w and its time variation. The effect degrades the resolution of w that can be obtained from current data.