N ov 2 00 2 Inflation , Quantum Cosmology and the Anthropic Principle 1

ar X iv : h ep - t h / 02 11 04 8 v 1 7 N ov 2 00 2 Inflation , Quantum Cosmology and the Anthropic Principle 1

v 2 2 1 D ec 2 00 4 Multiple universes , cosmic coincidences , and other dark matters

Even when completely and consistently formulated, a fundamental theory of physics and cosmological boundary conditions may not give unambiguous and unique predictions for the universe we observe; indeed inflation, string/M theory, and quantum cosmology all arguably suggest that we can observe only one member of an ensemble with diverse properties. How, then, can such theories be tested? It has ...

X iv : a st ro - p h / 98 05 25 2 v 1 1 9 M ay 1 99 8 Open Universes , Inflation , and the Anthropic Principle ∗

Models of open inflation with a variable density parameter Ω provide the most natural way to reconcile an open universe with inflation. The use of anthropic principle is essential to derive observational predictions of such models. I discuss how this principle can be used in a quantitative way to determine the most probable value of Ω. I also comment on recent work by Hawking and Turok on quant...

ar X iv : 0 81 1 . 44 01 v 1 [ he p - ph ] 2 6 N ov 2 00 8 What the inflaton might tell us about RHIC / LHC

Topical phenomena in high-energy physics related to collision experiments of heavy nuclei (”Little Bang”) and early universe cosmology (”Big Bang”) involve far-from-equilibrium dynamics described by quantum field theory. One example concerns the role of plasma instabilities for the process of thermalization in heavy-ion collisions. The reheating of the early universe after inflation may exhibit...

ar X iv : a st ro - p h / 98 05 25 2 v 2 2 8 M ay 1 99 8 Open Universes , Inflation , and the Anthropic Principle ∗

Models of open inflation with a variable density parameter Ω provide the most natural way to reconcile an open universe with inflation. The use of anthropic principle is essential to derive observational predictions of such models. I discuss how this principle can be used in a quantitative way to determine the most probable value of Ω. I also comment on recent work by Hawking and Turok on quant...