%0 Journal Article %T Legendrian links and the spanning tree model for Khovanov homology %A Hao Wu %J Mathematics %D 2006 %I arXiv %R 10.2140/agt.2006.6.1745 %X We use the spanning tree model for Khovanov homology to study Legendrian links. This leads to an alternative proof for Ng's Khovanov bound for the Thurston-Bennequin number and to both a necessary and a sufficient condition for this bound to be sharp. %U http://arxiv.org/abs/math/0605630v4