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hep-th2007★ 3 cited
Energy-momentum of a Cosmological Brane Model and the Gauge Hierarchy
Bei Jia, Xi-Guo Lee, Peng-Ming Zhang
We analyze the general covariant energy-momentum tensor of the gravitational system in genreal five-dimensional cosmological brane-world models. Then through calculating this energ…
hep-th2007
Small Cosmological Constants from a Modified Randall-Sundrum Model
Bei Jia, Xi-Guo Lee
We study a mechanism, inspired from the mechanism for generating the gauge hierarchy in Randall-Sundrum model, to investigate the cosmological constant problem. First we analyze th…
hep-th2007
Effective Field Theory, Renormalizability and Extra Dimensions
Bei Jia
We discuss in this paper two ways of defining the concept of "effective field theory": effective field theory defined by low energy effectiveness and effective field theory defined…