It seems there might be some confusion in your question regarding the terms "expansion," "replication," and "RST." To clarify:
Expansion: In cosmology, expansion refers to the observed phenomenon where the distances between galaxies or other cosmic structures increase over time. This expansion is described by the theory of cosmic expansion, which is primarily addressed by the Big Bang theory and its extensions, such as the inflationary cosmology and the ΛCDM (Lambda Cold Dark Matter) model. Expansion is a macroscopic phenomenon observed on cosmological scales.
Replication: The term "replication" typically refers to the process of duplicating or copying something. In the context of your question, it's unclear what specifically you mean by replication. If you can provide more context or clarification, I can try to address it further.
RST: The acronym "RST" is not commonly used in the context of mainstream physics or cosmology. It does not refer to a well-known theory or framework. Without more information, it is difficult to provide specific insights regarding RST.
Regarding the connection between macro and quantum theories, it is important to note that quantum mechanics provides the theoretical framework to understand phenomena at the microscopic scale, such as the behavior of particles and their interactions. On the other hand, macroscopic phenomena, including cosmic expansion, are described by classical or semiclassical theories, such as general relativity.
It is possible that you are referring to a specific theory or framework by the acronym "RST" that is not widely recognized. If you can provide more details or clarification about what RST stands for or the specific ideas you are referring to, I can try to provide more accurate information.