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The cosmological backreaction: gauge (in)dependence, observers and scalars
The cosmological backreaction gauge (in)dependence observers
2010/12/27
We discuss several issues related to a recent proposal for defining classical spatial averages to be used in the so-called cosmological backreaction problem. In the large averaging-volume limit all ga...
The cosmological backreaction: gauge (in)dependence, observers and scalars
Tcosmological backreaction gauge (in)dependence observers and scalars
2010/12/20
We discuss several issues related to a recent proposal for defining classical spatial averages
to be used in the so-called cosmological backreaction problem. In the large averaging-volume limit all g...
A useful guide for gravitational wave observers to test modified gravity models
gravitational wave modified gravity models
2010/3/17
We present an extension of a previously suggested test of all modified theories of gravity that would reproduce MOND at low accelerations. In a class of models, called "dark matter emulators", gravita...