Hello world!

• Q: What is the point of opening this blog?
• A: I would like to discuss here some fundamental problems in theoretical physics.
• Q: Like what?
• A: What is Minkowski space-time? Can one modify quantum mechanics? What are quantum fields? Is renormalization necessary? Is Maxwell's theory an accurate description of classical electrodynamics? What is the meaning of the gauge invariance?
• Q: Isn't it easier to pick up a textbook and find the answers there?
• A: Yes, if you believe that textbooks give you complete and precise answers. I have some doubts about that. I believe there are grey areas and lots of unanswered questions.
• Q: Why do you think these issues are important?
• A: It is not a secret that modern theoretical physics is in crisis. I believe that we cannot move forward without full understanding of foundational questions.
• Q: Crisis?.. What crisis!? Do you know about the Standard Model and Einstein's General Relativity which precisely describe all observable phenomena?
• A: Yes, I know about impressive results of these theories. However, I also know about some flaws and inconsistencies there. I would like to discuss them at this blog.
• Q: Are you going to offer a solution to the problem of quantum gravity?
• A: I have some ideas about that. However, I think, before moving into that territory it is important to reexamine the foundations: Special Relativity, Quantum Mechanics, and their unification.
• Q: What is the point of doing that? Very smart people worked on these issues for more than 100 years. Everything that can be solved and understood is already solved and understood. Special Relativity and Quantum Mechanics are happily united in Quantum Field Theory and, ultimately, in the Standard Model.
• A: Well, if everything is so cool, then why the unification of SM and GR is such an intractable problem? Something should be wrong in our present understanding of Nature. Let us review what has been done in the last 100 years. Maybe we will find some unexplored areas and some new ways of looking at things.
• Q: What do you think about string theory?
• A: No comments.
• Q: What do you think about loop quantum gravity?
• A: No comments.
• Q: What do you think about Axiomatic (Algebraic) QFT?
• A: No comments.