1201.3132 (Ali Masoumi et al.)

Moving Stable Solitons in Galileon Theory    [PDF]

Ali Masoumi, Xiao Xiao

Despite the no-go theorem [5] which rules out static stable solitons in Galileon theory, we propose a family of solitons that evade the theorem by traveling at the speed of light. These domain-wall-like solitons are stable under small fluctuations-analysis of perturbation shows neither ghost-like nor tachyon-like instabilities, and perturbative collision of these solitons suggests that they pass through each other asymptotically, which maybe an indication of the integrability of the theory itself.

View original: http://arxiv.org/abs/1201.3132