Time collapses at the quantum level.

When a particle releases information or energy it turns older. When a particle receives energy it turns younger. 

The time arrow (or arrow of time) means energy flows from one particle into another. When a transmitting particle sends energy it turns older. The receiving particle gets extra energy and that causes time dilation in that particle. Time arrows also exist for information. In some models, the Big Bang formed when two different ways traveling time arrows, the time arrow that travels forward and the time arrow that travels back in time impacted. 

The new theory says that time existed before the Big Bang and space is one of the forms of time, we face models where time is like a path or river. The three-dimensional means that there are two-time arrows. Those time arrows move to the future and to the past. When one arrow moves to the future it releases energy. That energy pushes particles around it back in time. Or it forms another time arrow that moves in the opposite direction. 

One and the most regular time arrow goes forward or to the future And the second time arrow will travel backward. The third dimension of time exists between those paths. We can think that we are in the river and the flow takes us with it. We see the bottom of the river. We see that we move over the bottom and because there is garbage in the river we cannot see the destiny. 

In the universe or quantum systems, there is also garbage and hummus. They are particles and reflection between particles is the reason why we cannot see the end of that road. We would see the end of the river “easily” if we just put our heads above the surface. But that requires that we just raise our energy level to so high that we can go out from the 3D spacetime. 

"Illustration of the dual arrows of time in open quantum systems. Image generated by AI." (Sustainability Times, “Time Breaks Down at Quantum Scale”: New Scientific Discovery Shocks Physicists and Redefines the Laws of the Universe)

The light cones or time cones can introduce situations where time arrows impact. If two time arrows impact that can cause some kind of explosion. And can the impacting time arrows or information that they involved cause things like the Big Bang? If we look at the time, or light cone we can think that we live at the hypersurface of the present. That could be the third dimension of time that formed when two time arrows or time cones imacted. 

The reason why I always compare time to the river is this: Time itself is the thing that always moves. If we try to swim against that river we need more energy to win that flow. This is the reason why we cannot make time machines as easily as we think. 

We cannot affect time itself. But we can affect how time behaves near us. Time is like a river. Near the bottom and sides, the time moves slower. When the energy level of a particle decreases, the energy flow’s speed away from it decreases. 

That means when the energy in the particle closes to energy minimum its flow slows because the energy level’s difference between the particle and its environment determines how fast energy travels out from the particle. If that difference is high energy flows out from the particle faster than if the difference between energy levels of the particle and environment is low.  

So, when the particle releases its energy fast, that thing means that it creates a fast time arrow that pushes other particles or time arrows back. The idea is that when a particle releases its energy, some other particle receives it. That causes time dilation in those particles. 

In closed quantum systems like in black holes. The particle has no space to avoid the time arrow. A long time researchers thought that the time arrow could move back in time.  Only in closed systems, because in open systems time arrow or energy flow pushes particles away from it's route. The energy flow can cause time dilation only if it is stored in a particle.  And the particle must not release that energy somewhere. 

The first time British researchers confirmed two ways of two-dimensional time arrows in open quantum systems. "This revelation challenges the notion of irreversible processes and suggests a more complex relationship between time and entropy" (Sustainability Times, “Time Breaks Down at Quantum Scale”: New Scientific Discovery Shocks Physicists and Redefines the Laws of the Universe). 

That thing might not bring time machines into our hands. But it helps to understand the nature of time. The opposite time arrows are thought to exist only in a closed quantum system. Time is the dominating element in the universe. 

However, if a traditional time model has two dimensions, back and forward, we face one question: what if we stand between the time arrows? Does that thing make us or the object to stretch and start existence in the past and the future at the same time? Those things are interesting philosophical ideas. 

https://www.sustainability-times.com/research/time-breaks-down-at-quantum-scale-new-scientific-discovery-shocks-physicists-and-redefines-the-laws-of-the-universe/

https://en.wikipedia.org/wiki/Arrow_of_time