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We study the structural properties like the gravitational mass, radius andtidal deformability of dark matter (DM) admixed strange quark stars (SQSs). Forthe purpose we consider the vector MIT Bag model to describe the strange quarkmatter (SQM) and investigate the possible presence of accreted DM in the SQSsconsequently forming DM admixed SQSs. We introduce feeble interaction betweenSQM and the accreted fermionic DM via a vector dark boson mediator. Consideringthe present literature, in the context of possible presence of DM in SQSs, thiswork is the first to consider interaction between DM and SQM in the DM admixedSQSs. The mass of the DM fermion ($m_{\chi}$) and the vector mediator($m_{\xi}$) and the coupling ($y_{\xi}$) between them are determined inaccordance with the constraint from Bullet cluster and the present day relicabundance, respectively. We find that the presence of DM reduces both the massand radius of the star compared to the no-DM case. The massive the DM fermion,the lower the values of maximum mass and radius of the DM admixed SQSs. For thechosen values of $m_{\chi}$ and corresponding values of $m_{\xi}$ and$y_{\xi}$, the computed structural properties of the DM admixed SQSs satisfyall the various present day astrophysical constraints.We obtain massive DMadmixed SQSs configurations consistent with the GW190814 observational data.Hence the secondary compact object associated with this event may be a DMadmixed SQS.

Vector dark boson mediated feeble interaction between fermionic dark matter and strange quark matter in quark stars