December 6, 2009

Three stories about quantum gravity ...

Steven Weinberg about asymptotic safety (again).

Steven Giddings about the 'information loss paradox' and nonlocality.

Chun-Yen Lin, a student of Steven Carlip, tries to find general relativity within 'loop quantum gravity'. (I don't understand enough about l.q.g. to know whether he succeeded.)

... but are they true stories?



In a completely unrelated article at PhysicsWorld Chad Orzel describes experiments which try to determine the electric dipole moment of the electron. These low-energy, high-precision experiments are indeed a search for physics beyond the standard model and so far they can already be used to rule out some 'naive' supersymmetric models.

Stories about atoms and simple molecules.

True stories.