$P_c$-like pentaquarks in hidden strange sector

Analogous to the work of hidden charm molecular pentaquarks, we study possible hidden strange molecular pentaquarks composed of $\mathrm{\Sigma }$ (or ${\mathrm{\Sigma }}^{\ast }$) and $K$ (or $K^{\ast }$) in the framework of quark delocalization color screening model. Our results suggest that the $\mathrm{\Sigma }K$, $\mathrm{\Sigma }{K}^{\ast }$ and ${\mathrm{\Sigma }}^{\ast }{K}^{\ast }$ with $I{J}^P=\frac{1}{2}{\frac{1}{2}}^{-}$ and $\Sigma K^{}$,$\Sigma^{} K$and$\Sigma^{} K^{}$with$IJ^{P}=\frac{1}{2}\frac{3}{2}^{-}$ are all resonance states by coupling the open channels. The molecular pentaquark ${\mathrm{\Sigma }}^{\ast }K$ with quantum numbers $I{J}^P=\frac{1}{2}{\frac{3}{2}}^{-}$ can be seen as a strange partner of the LHCb $P_c(4380)$ state, and it can be identified as the nucleon resonance $N^{\ast }(1875)$ listed in PDG. The $\mathrm{\Sigma }{K}^{\ast }$ with quantum numbers $I{J}^P=\frac{1}{2}{\frac{3}{2}}^{-}$ can be identified as the $N^{\ast }(2100)$, which was experimentally observed in the $\varphi$ photo-production.