There is no formal academic or "deep paper" regarding a "MUGEN 6GB patch." In the context of MUGEN (the 2D fighting game engine), performance patches are community-developed software tools rather than subjects of academic research.
"MUGEN 6GB patch" is likely a misconception of the well-known mugen+6gb+patch
The 4GB Patch Tool: Created by NTCore, this tool modifies the executable header of 32-bit applications (like mugen.exe) to set the IMAGE_FILE_LARGE_ADDRESS_AWARE flag. There is no formal academic or "deep paper"
High-Resolution Content: Modern MUGEN projects often use HD (720p or 1080p) stages and high-fidelity sprites that quickly exceed the 2GB limit. mugen+6gb+patch
But a few notable story-focused MUGEN builds exist that benefit from the extra memory (to avoid crashes with large assets):