Many-worlds Interpretation Of Quantum Measurement Theory Research

The quantum measurement problem occurs at the beginning of quantum theory. It is from then on that various kinds of attempts to solve measurement appear continuously. Among them, Copenhagen interpretation gains orthodox position as commonly received standard interpretation, however, with quantum theory expanding towards to macroscopic and cosmoscopy, it continuously breaks the limits of Copenhagen interpretation. Due to this phenomenon, the orthodox position of Copenhagen interpretation appears crisis and various interpretations exist at the same time in quantum measurement theory, which is in an embarrassed circumstance. As a matter of fact, the orthodox position of Copenhagen interpretation has been fluctuated since the 1990s among quantum physicists, mathematicians and some physics philosophers. Many-worlds interpretation theory supersedes it.Many-worlds interpretation theory was based upon Everett's Doctoral Dissertation in 1957. His original aim was to perfect Copenhagen interpretation. According to comprehensive research and investigation of quantum measurement, Everett denied wave function collapse. He held the opinion that wave function was true physical reality and put forward relative-state interpretation. He pointed out that form of system in quantum mechanics could supply its own interpretation which was the internal part of the theory, not belonging to the scope of philosophy. It is on the base of this that many-worlds interpretation makes an development. Although there are some divisions of this theory at the last period, its basic standpoint has never been changed. That is to perfect Copenhagen interpretation from the position of impersonality and realism, adhering to the probability of Born's rule all the time. Many-worlds interpretation maintains that wave function is the common impersonal reality in the whole universe and it will never collapse but just appears bifurcation, which is different from Copenhagen interpretation. Our world exists parallelly. There are only relative but not absolute meaning between so-called"visible"and"invisible". It is totally equivalent of these parallel worlds. The basic difference between many-worlds interpretation and Copenhagen interpretation expands encircling the comprehension of wave function. By reducing the measurement to pure physical process, absolutely abolishing the special status of observers and insisting particular realism's position, many-worlds interpretation theory is realistic, universally applicable and commits itself to solve the contradiction between quantum mechanics and general theory of relativity to some extent. Furthermore, it has conquered the limitation of"seeing is believing"to a great degree and broken through the theoretical concept of instrumentalism. Because instrumentalists only consider the interpretation as mental property. The interpretation is also considered as compiled matter in the theory for contributing to human's memory and gaining pleasure. Theory standpoint of many-worlds interpretation argues that the discovery and foundation of scientific theory don't excessively depend on experience, otherwise, the structure of the true world could be disclosed by invisible theory.Quantum mechanics destroys the basic principles of modern science again and again , such as causality, determinism and realism. Such thing as breaks through the routine expands from natural science field to philosophical field, which causes revolution of the world outlook and the view of reality. Actually, the interpretations of quantum measurement are to seek the source of phenomenon which is abnormal and violates the routine. The difference is that some interpretations try to seek from the outside of quantum theory while many-worlds interpretation theory explains the relationship between quantum world and ordinary macroscopic world from the form of system in quantum mechanics, without adding any other redundant hypothesis or setting of wave function collapse. The world prospect of"many worlds"occurs only in the"splitting process"of measurement. This theory makes quantum theory become a universally applicable theory which could be used to microscopic field, macroscopic field and even to cosmoscopy field.Because a lot of researchers should have thought highly of many-worlds interpretation theory, they reduced it to the position of other interpretations, emphasizing the pluralism of quantum measurement and disregarding to new standard interpretation position and importance of Everett's interpretation. Many-worlds interpretation has been sustained by many experiments and powerful theories in the recent years, especially by the decoherence theory which has solved the prior group issue of many-worlds interpretation. As well as many-worlds theory, decoherence theory is the theoretic hotspot of quantum mechanics. This theory holds the perspective that quantum character is commonly existing, not only in microscopic world. We cannot observe the interference phenomenon just because our real physical system is not isolated but open and the interaction between this system and environment occurs decoherence . Therefore, on the foundation of successive relationship between position of the old and the new orthodox interpretations, this paper puts emphases on the differences and perfections between many-worlds interpretation and Copenhagen interpretation from 13 aspects , including in a special position of the observers or not, wave function's essentiality, the relationship between probability problem, realism and so on. For example, It insists on quantum state realism beyond positivism ; insist on monism beyond dualism; insists on determinism cancel indeterminism. The quantum state realism overcomes the fuzziness on the ontology of the standard of scientific realism.In one word, this paper argues that we should abandon prejudice and treat many-worlds interpretation impersonally and seriously, though the conclusion of many-worlds seems to be full of scientific fancy. Because many-worlds interpretation theory is the natural interpretation which is born from the inner part of theoretical physics, being the most simple and precise as well as serious. It is founded on the base of the best scientific theory hitherto.