LQG

The third piece of good news is that ideas of gravitation that mistakes this emergent property for a real object, such as LQG, are dead in the water.

Einstein Still Rules, Says Fermi Telescope Team | Universe Today 2009

Perhaps other approaches such as LQG will eventually shed light on this, but in all liklihood string theory will still be part of the picture.

Guest Post: Joe Polchinski on Science or Sociology? Sean 2007

String theory of course has its problems, but what might be called the "theory space" is huge — far larger than that of LQG.

Einstein Still Rules, Says Fermi Telescope Team | Universe Today 2009

LQG famously can't produce even a harmonic oscillator or lower energy bounds.

Einstein Still Rules, Says Fermi Telescope Team | Universe Today 2009

The LQG people point to this as a main complaint with string theory.

Einstein Still Rules, Says Fermi Telescope Team | Universe Today 2009

In the end LQG is basically a system of constraints.

Einstein Still Rules, Says Fermi Telescope Team | Universe Today 2009

The biggest problem LQG has is gauge ambiguity and the Barbero-Immirzi parameter problem.

Einstein Still Rules, Says Fermi Telescope Team | Universe Today 2009

This of course annoys people, in particular the LQG people who boast of no background.

Einstein Still Rules, Says Fermi Telescope Team | Universe Today 2009

But this is old and good! news, why the late or absent reaction from the LQG people?

Einstein Still Rules, Says Fermi Telescope Team | Universe Today 2009

In other alternative theory, the LQG, it says too.

Einstein Still Rules, Says Fermi Telescope Team | Universe Today 2009