Slavnov and Gaudin-Korepin Formulas for Models without U(1){\rm U}(1) Symmetry: the Twisted XXX Chain

We consider the XXX spin-$\frac{1}{2}$ Heisenberg chain on the circle with an arbitrary twist. We characterize its spectral problem using the modified algebraic Bethe anstaz and study the scalar product between the Bethe vector and its dual. We obtain modified Slavnov and Gaudin-Korepin formulas for the model. Thus we provide a first example of such formulas for quantum integrable models without ${\rm U}(1)$ symmetry characterized by an inhomogenous Baxter T-Q equation

Exchange Rate Pass-Through to Consumer Prices in Nigeria

The increasing overdependence of Nigerian economy on imports has necessitated the need to continually examine the effect of exchange rate shocks in consumer prices. The paper adopts a Structural Vector autoregressive to estimate the pass-through effect of exchange rate changes to consumer prices. Using the Variance Decomposition analyses, the study found a substantially large exchange rate pass-through to inflation in Nigeria. Finding shows that exchange rate has been more important in explaining Nigeria’s rising inflation phenomenon than the actual money supply. Therefore, it is recommended that Nigerian economy focuses on policies that ensure exchange rate stability and sound monetary surveillance