In this review we present a thoroughly comprehensive survey of recent work on modified
theories of gravity and their cosmological consequences. Amongst other things, we cover …

The status of experimental tests of general relativity and of theoretical frameworks for
analyzing them is reviewed and updated. Einstein's equivalence principle (EEP) is well …

This biennial Review summarizes much of particle physics. Using data from previous
editions, plus 2158 new measurements from 551 papers, we list, evaluate, and average …

In the context of conventional quantum field theory, we present a general Lorentz-violating
extension of the minimal SU (3)× SU (2)× U (1) standard model including CPT-even and …

Fundamental constants are a cornerstone of our physical laws. Any constant varying in
space and/or time would reflect the existence of an almost massless field that couples to …

This work tabulates measured and derived values of coefficients for Lorentz and CPT
violation in the standard-model extension. Summary tables are extracted listing maximal …

This article describes the various experimental bounds on the variation of the fundamental
constants of nature. After a discussion of the role of fundamental constants, their definition …

Motivated by ideas about quantum gravity, a tremendous amount of effort over the past
decade has gone into testing Lorentz invariance in various regimes. This review …

The role of Lorentz symmetry in noncommutative field theory is considered. Any realistic
noncommutative theory is found to be physically equivalent to a subset of a general Lorentz …

We review many quantum aspects of torsion theory and discuss the possibility of the space–
time torsion to exist and to be detected. The paper starts, in Section 2, with a pedagogical …