it is worth noting that theoretical physics is a highly complex and specialized field. Advanced research papers often delve into intricate mathematical formulations and abstract concepts that can be challenging for even seasoned physicists to comprehend fully. It is not uncommon for physicists to focus on specific areas of research and have limited familiarity with work outside their expertise.
In scientific research, collaboration and specialization play crucial roles. Researchers often rely on each other's expertise to collectively advance knowledge and understanding. It is not necessary for every scientist to fully understand or be able to reproduce the work of others in different areas of specialization. Rather, the scientific community benefits from the exchange of ideas, peer review, and collaboration to collectively advance scientific knowledge.
While it is natural to strive for a deep understanding of one's field, the vastness and complexity of modern science make it impossible for any individual to be an expert in all areas. Thus, scientists generally focus their efforts on specific subfields where they can contribute most effectively.
In summary, it is challenging for any individual physicist to be well-versed in all areas of theoretical physics. Rather than feeling ashamed, scientists typically acknowledge the limitations of their knowledge and rely on collaboration and collective efforts to advance scientific understanding.