http://arxiv.org/abs/gr-qc/0408074(adsbygoogle = window.adsbygoogle || []).push({});

Bill Unruh has been doing some LQC research

Looking at the positive curvature case

Bojowald and friends mostly looked at the spatially flat case

Unruh found some interesting difficulties with the positive curved universe, especially the kind that eventually collapses

"Difficulties with Closed Isotropic Loop Quantum Cosmology"

Daniel Green and William Unruh

Unruh came up with the Unruh temperature and Unruh radiation about the same time that Hawking came up with Hawking temperature and Hawking radiation. It is nice that Unruh has taken an interest in LQC and something could come of this. It might shake things up and trigger some new growth.

Bojowald is a young guy just barely out of his postdocs and

Unruh is a major figure of the 1970s onwards. Hello.

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# Unruh: Loop Quantum Cosmology paper (new)

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