The concept of converting matter into energy and vice versa is related to Einstein's famous equation, E=mc², which states that energy (E) and mass (m) are interchangeable. This equation suggests that matter can be converted into energy and vice versa under certain conditions.
However, this process does not provide a means for time travel. Time travel refers to the hypothetical ability to move backward or forward in time, experiencing events out of their chronological order. While Einstein's theory of relativity allows for certain situations where time dilation occurs (such as in the presence of intense gravitational fields or near the speed of light), it does not support backward time travel.
Time is considered to be a dimension that flows in a single direction, commonly referred to as the "arrow of time." The laws of physics, as currently understood, do not provide a mechanism for traversing time in the opposite direction. This is known as the "causality principle," which states that an effect must always follow its cause.
The conversion of matter into energy and vice versa does not alter the directionality of time. It is a process that occurs within the framework of the arrow of time. So while matter-energy conversion is a fascinating aspect of physics, it does not provide a means for traveling backward in time based on our current scientific understanding.