We consider a class of quantum quenches in the spin-1/2 XXZ chain, where the
initial state is of a simple product form. Specific examples are the N\'eel
state, the dimer state and the q-deformed dimer state. We compute determinant
formulas for finite volume overlaps between the initial state and arbitrary
eigenstates of the spin chain Hamiltonian. These results could serve as a basis
for calculating the time dependence of correlation functions following the
quantum quench.Comment: 17 pages, 1 figure, v2: one reference added, v3: minor modification,
v4: minor modification, v5: calculation of the determinant formula simplified
and a note added, v6: references update
