COMPUTATIONAL PHYSICS AS A TREND

Here a photograph of the inside of a computer, It seems computing machines are indispensable for constructing building stones for theoretical physics.

Computational physics seems to become more and more a trend. 

Should every physical theory only be valid if experimentally testable? This issue was put forward in an article by George Ellis and Joe Silk in Nature we all know as a most prominent  international journal of science. The philosophical tradition demands experimental verification. But what about string theory and multiverse theories? They cannot be verified by experiments, but they can make us feel to give a reasonable elegant explanation and may work inconsistencies out of sight. Field theory may use strings as a sort of units of space and make unification of quantum theory and general relativity perhaps possible.                                                We know there are the  questions involving the Standard Model. Why is the fine structure constant which is decisive for the strength of the  electromagnetic force, fine-tuned in such a way it has just the right value to make biological systems possible? Or are there infinite other universes having other values for electromagnetic forces and other biological systems as a result?                                                                                It looks like physics nowadays has become merely computational physics constructing theories by making data to fit in purely theoretical concepts? Is experimental verification or falsification still necessary?                                                                                                                                                                                     In history the scientific method proved it to be surely legitimate to bring about hypotheses, which cannot be verified right away but after some time demonstrate experimentally what they are worth. But what about strings?  Immediate verification seems not possible for 10^─ 35m strings and probably will never be. Be that as it may every valid new theory should be able to predict unambiguously new properties of an object other theories cannot. It is not enough for string theory to prove it does not contradict quantum mechanics or is in agreement with a positive bending of space. It should be able to give us more new experimentally measurable information.      As for the many worlds theory it should show us more than only being able to move inconsistencies in our own universe out of sight. Such a theory should be able to provide us with experimental testable knowledge about this universe that no other theory we already have can give us                       The trend shows that physics is mathematized more and more. String theory and multiverse theories till now are mainly mathematical concepts to be distinguished from physics. Nothing wrong with that. By the way, does the conception of infinity in mathematics really exist? It is not experimentally measurable. But for calculating limits, differential and integral calculus, asymptotic behaviour of graphs we make use of it in physics all the time.   

  For reactions: ahjohann84@gmail.com

 Only if possible an answer may follow.

The author takes no responsibilities for using the text above or any actions based on the text above.