Fundamental Interactions Proceedings of the Twentieth Lake Louise Winter Institute, Lake Louise, Alberta, Canada, 20-26 February, 2005

This proceedings volume contains pedagogical lectures on theoretical and experimental particle physics, cosmology and atomic trap physics. It also includes additional contributions that provide up-to-date information on new experimental results from accelerators, underground laboratories, and nuclear astrophysics. This combination of pedagogical talks and topical short talks provides comprehensive information to researchers in the fields of particle physics, cosmology and atomic trap physics. Readership: Graduate students, researchers and academics in high energy physics, particle physics and astrophysics.