Virasoro central extension
= Virasoro central extension
{c}
The Virasoro central extension is the term $c(m^3-m)\delta_{m+n,0}/12$ in $[L_m,L_n]$. It records the conformal anomaly and commutes with every Virasoro generator.
= Virasoro central extension
{c}
The Virasoro central extension is the term $c(m^3-m)\delta_{m+n,0}/12$ in $[L_m,L_n]$. It records the conformal anomaly and commutes with every Virasoro generator.