New Horizons in Gravity: Dark Energy and Condensate Stars

Understand

Black holes are an apparently unavoidable prediction of classical General Relativity, at least if matter obeys the strong energy condition rho + 3p > 0.

• However quantum vacuum fluctuations generally violate this condition, as does the eq.
• of state of cosmological dark energy.
• When quantum effects are considered, black holes lead to a number of thermodynamic paradoxes associated with the Hawking temperature and assumption of black hole entropy, which are briefly reviewed.