Cosmological expansion and local physics

Valerio Faraoni and Audrey Jacques
Phys. Rev. D 76, 063510 – Published 24 September 2007

Abstract

The interplay between cosmological expansion and local attraction in a gravitationally bound system is revisited in various regimes. First, weakly gravitating Newtonian systems are considered, followed by various exact solutions describing a relativistic central object embedded in a Friedmann universe. It is shown that the “all or nothing” behavior recently discovered (i.e., weakly coupled systems are comoving while strongly coupled ones resist the cosmic expansion) is limited to the de Sitter background. New exact solutions are presented which describe black holes perfectly comoving with a generic Friedmann universe. The possibility of violating cosmic censorship for a black hole approaching the big rip is also discussed.

  • Received 7 June 2007

DOI:https://doi.org/10.1103/PhysRevD.76.063510

©2007 American Physical Society

Authors & Affiliations

Valerio Faraoni* and Audrey Jacques

  • Physics Department, Bishop’s University, 2600 College Street, Sherbrooke, Québec, Canada J1M 0C8

  • *vfaraoni@ubishops.ca
  • ajacques@ubishops.ca

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Issue

Vol. 76, Iss. 6 — 15 September 2007

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