The concept of time as the fourth dimension of spacetime, as described by Einstein's theory of general relativity, is a well-established idea in physics. According to this framework, spacetime is a unified four-dimensional structure where both space and time are interconnected.
However, it's important to note that the entanglement of particles is a phenomenon that occurs within a given moment in time, rather than across different time periods. Entanglement is a correlation between the quantum states of particles at a specific instant, and it is not directly related to the notion of time as an illusion or the temporal ordering of events.
In our current understanding of quantum mechanics, entanglement is typically described within the context of a fixed reference frame and a specific time slice. The entangled particles exist simultaneously in that time frame and can be correlated even if they are separated by large distances.
While there is ongoing research on the relationship between quantum mechanics and the nature of time, such as investigations into quantum gravity and the emergence of time from fundamental principles, the idea of entanglement across different time periods is not a concept supported by current mainstream theories. The entanglement of particles primarily occurs within a specific moment in time, and the entanglement itself does not directly extend across different temporal intervals.