LATTICE QCD AT THE END OF 2003

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Abstract
We review recent developments in lattice QCD. We first give an overview of its formalism, and then discuss lattice discretizations of fermions. We then turn to a description of the quenched approximation and why it is disappearing as a vehicle for QCD phenomenology. We describe recent claims for progress in simulations which include dynamical fermions and the interesting theoretical problems they raise. We conclude with brief descriptions of the calculations of matrix elements in heavy flavor systems and for kaons.
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