Phys. Rev. D 75, 083003 (2007) [5 pages]Dark energy and the mass of galaxy clustersReceived 19 February 2007; published 16 April 2007 Up to now, dark energy evidences are based on the dynamics of the universe on very large scales, above 1 Gpc. Assuming it continues to behave like a cosmological constant Λ on much smaller scales, I discuss its effects on the motion of nonrelativistic test particles in a weak gravitational field, and I propose a way to detect evidences of Λ≠0 at the scale of about 1 Mpc: the main ingredient is the measurement of galaxy cluster masses. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.75.083003
DOI:
10.1103/PhysRevD.75.083003
PACS:
95.36.+x, 98.65.Cw, 98.80.Es
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