Tachyon
= Tachyon
{title2=$M^2<0$}
{wiki}
A negative squared <mass> in a relativistic field spectrum signals instability of the background about which the field is expanded. The <bosonic string mass spectrum> contains such an unexcited state.
= Tachyon
{title2=$M^2<0$}
{wiki}
A negative squared <mass> in a relativistic field spectrum signals instability of the background about which the field is expanded. The <bosonic string mass spectrum> contains such an unexcited state.