The concept you are referring to is related to the theoretical notion of "retrocausality" and the possibility of particles traveling backward in time. In standard physics, the concept of particles reversing their direction of time is not supported.
In quantum field theory, which is the framework used to describe the behavior of elementary particles, particles are generally considered to move forward in time along their worldlines. The "arrow of time" is a fundamental concept in physics, indicating that cause and effect relationships typically occur in a forward direction.
However, there is a phenomenon called "antiparticle annihilation and creation" that can occur in particle physics. Antiparticles are particles with the same mass but opposite charge compared to their corresponding particles. When an electron and a positron come into contact, they can annihilate each other, producing energy in the form of photons (particles of light). Conversely, high-energy photons can create electron-positron pairs through a process called pair production.
In these processes, the particles are not "reversing" their direction of time but rather undergoing interactions governed by the laws of quantum field theory and conservation principles.
It's important to note that the concept of particles traveling backward in time is still a subject of ongoing research and debate in some areas of physics, such as quantum gravity and certain interpretations of quantum mechanics. However, the mainstream understanding and mathematical formalism used in modern physics do not support the notion of particles switching their direction of time.