Semantic Scholar Open Access 2010 9 sitasi

Dark Energy and Projective Symmetry

G. Gibbons C. Warnick

Lihat Sumber DOI

Abstrak

Abstract Nurowski [P. Nurowski, Is dark energy meaningless?, arXiv:1003.1503 [math.DG]] has recently suggested a link between the observation of dark energy in cosmology and the projective equivalence of certain Friedman–Lemaitre–Robertson–Walker (FLRW) metrics. Specifically, he points out that two FLRW metrics with the same unparameterized geodesics have their energy densities differing by a constant. From this he queries whether the existence of dark energy is meaningful. We point out that physical observables in cosmology are not projectively invariant and we relate the projective symmetry uncovered by Nurowski to some previous work on projective equivalence in cosmology.

Topik & Kata Kunci

Physics

Penulis (2)

G. Gibbons

C. Warnick

Format Sitasi

APA MLA BibTeX

Gibbons, G., Warnick, C. (2010). Dark Energy and Projective Symmetry. https://doi.org/10.1016/j.physletb.2010.04.016

Akses Cepat

Lihat di Sumber doi.org/10.1016/j.physletb.2010.04.016

Informasi Jurnal

Tahun Terbit: 2010
Bahasa: en
Total Sitasi: 9×
Sumber Database: Semantic Scholar
DOI: 10.1016/j.physletb.2010.04.016
Akses: Open Access ✓