arXiv dynamics Hot topics 2008 Browse arXiv String theory; Field theory; Gauge theory; Moduli space (new) (Blogs| recent posts) Black hole; Dark energy; Gravitational wave; Quantum gravity (new) (Blogs| recent posts) Quantum dot; Quantum hall; Bose-einstein condensate; Hubbard model (new) (Blogs| recent posts) Heavy ion; Structure function; Ion collision; Nuclear matter (new) (Blogs| recent posts