# Tag Info

I took the liberty of modifying the title of your question, as it is not the zero coupon you want to replicate but the future value of the short rate, $S(T) = R(T)$ in your notation. You have already given the answer yourself, namely $$S(t) = \lim_{\epsilon \rightarrow 0} \frac{B(t,T) - B(t, T+\epsilon)}{\epsilon}$$ In practice it is not possible to trade ...