The problem with Landau relativity special is that it does not fully account for the effects of gravity and acceleration on space and time.
Landau relativity special is a simplified version of Einstein's theory of relativity, which only applies to frames of reference moving at a constant velocity. Einstein's theory takes into account the effects of acceleration and gravity on space and time.
Landau relativity special is often used in high energy physics and particle accelerators, as well as in the study of special relativity in general.
No, Landau relativity special does not take into account the effects of gravity on space and time, so it cannot fully explain the bending of light by massive objects. Einstein's theory of general relativity is needed to fully explain this phenomenon.
Yes, Landau relativity special is still considered a valid theory in the context of frames of reference moving at constant velocities. However, it is not a complete theory of relativity and has been superseded by Einstein's theory of general relativity.