Spherical Shalika models on ${\mathrm{PGU}}_{2,2}$ and the theta correspondence for $({\mathrm{PGSp}}_4,{\mathrm{PGU}}_{2,2})$

Antonio Cauchi, Armando Gutierrez Terradillos

We study Shalika models for generic unramified representations of ${\mathrm{PGU}}_{2,2}$ over non-archimedean local fields of characteristic zero. We show that they are unique up to…