Tachyons in the Galilean limit

Batlle, C ; Gomis, J ; Mezincescu, L ; Townsend, Paul Kingsley (2017-04-20)


The Souriau massless Galilean particle of “colour” k and spin s is shown to be the Galilean limit of the Souriau tachyon of mass m = ik and spin s. We compare and contrast this result with the Galilean limit of the Nambu-Goto string and Green-Schwarz superstring.