Matches in SemOpenAlex for { <https://semopenalex.org/work/W2113248633> ?p ?o ?g. }
- W2113248633 endingPage "553" @default.
- W2113248633 startingPage "417" @default.
- W2113248633 abstract "The relationship between classical and quantum theory is of central importance to the philosophy of physics, and any interpretation of quantum mechanics has to clarify it. Our discussion of this relationship is partly historical and conceptual, but mostly technical and mathematically rigorous, including over 500 references. For example, we sketch how certain intuitive ideas of the founders of quantum theory have fared in the light of current mathematical knowledge. One such idea that has certainly stood the test of time is Heisenberg's `quantum-theoretical Umdeutung (reinterpretation) of classical observables', which lies at the basis of quantization theory. Similarly, Bohr's correspondence principle (in somewhat revised form) and Schroedinger's wave packets (or coherent states) continue to be of great importance in understanding classical behaviour from quantum mechanics. On the other hand, no consensus has been reached on the Copenhagen Interpretation, but in view of the parodies of it one typically finds in the literature we describe it in detail. On the assumption that quantum mechanics is universal and complete, we discuss three ways in which classical physics has so far been believed to emerge from quantum physics, namely in the limit h -> 0 of small Planck's constant (in a finite system), in the limit N goes to infinity of a large system with $N$ degrees of freedom (at fixed h), and through decoherence and consistent histories. The first limit is closely related to modern quantization theory and microlocal analysis, whereas the second involves methods of C*-algebras and the concepts of superselection sectors and macroscopic observables. In these limits, the classical world does not emerge as a sharply defined objective reality, but rather as an approximate appearance relative to certain ``classical states and observables. Decoherence subsequently clarifies the role of such states, in that they are ``einselected, i.e. robust against coupling to the environment. Furthermore, the nature of classical observables is elucidated by the fact that they typically define (approximately) consistent sets of histories. This combination of ideas and techniques does not quite resolve the measurement problem, but it does make the point that classicality results from the elimination of certain states and observables from quantum theory. Thus the classical world is not created by observation (as Heisenberg once claimed), but rather by the lack of it." @default.
- W2113248633 created "2016-06-24" @default.
- W2113248633 creator A5060266645 @default.
- W2113248633 date "2007-01-01" @default.
- W2113248633 modified "2023-09-27" @default.
- W2113248633 title "BETWEEN CLASSICAL AND QUANTUM" @default.
- W2113248633 cites W100157719 @default.
- W2113248633 cites W1489402929 @default.
- W2113248633 cites W1494610760 @default.
- W2113248633 cites W1496388320 @default.
- W2113248633 cites W1514431383 @default.
- W2113248633 cites W1541903304 @default.
- W2113248633 cites W1564681818 @default.
- W2113248633 cites W1567993384 @default.
- W2113248633 cites W1575743330 @default.
- W2113248633 cites W1583224455 @default.
- W2113248633 cites W1587071735 @default.
- W2113248633 cites W1588860486 @default.
- W2113248633 cites W1603569587 @default.
- W2113248633 cites W164915248 @default.
- W2113248633 cites W1658058168 @default.
- W2113248633 cites W1696068948 @default.
- W2113248633 cites W1884836326 @default.
- W2113248633 cites W1897423690 @default.
- W2113248633 cites W1949448069 @default.
- W2113248633 cites W1963596092 @default.
- W2113248633 cites W1964740402 @default.
- W2113248633 cites W1965378359 @default.
- W2113248633 cites W1965682166 @default.
- W2113248633 cites W1966026556 @default.
- W2113248633 cites W1966527120 @default.
- W2113248633 cites W1966700487 @default.
- W2113248633 cites W1967007850 @default.
- W2113248633 cites W1967819840 @default.
- W2113248633 cites W1969196763 @default.
- W2113248633 cites W1969913089 @default.
- W2113248633 cites W1970156430 @default.
- W2113248633 cites W1970996569 @default.
- W2113248633 cites W1971084549 @default.
- W2113248633 cites W1971968387 @default.
- W2113248633 cites W1973053315 @default.
- W2113248633 cites W1973260862 @default.
- W2113248633 cites W1973293814 @default.
- W2113248633 cites W1973797098 @default.
- W2113248633 cites W1973827495 @default.
- W2113248633 cites W1974236618 @default.
- W2113248633 cites W1975344164 @default.
- W2113248633 cites W1976254501 @default.
- W2113248633 cites W1977883921 @default.
- W2113248633 cites W1978473840 @default.
- W2113248633 cites W1978654044 @default.
- W2113248633 cites W1978676081 @default.
- W2113248633 cites W1979494073 @default.
- W2113248633 cites W1979721696 @default.
- W2113248633 cites W1980121671 @default.
- W2113248633 cites W1980180714 @default.
- W2113248633 cites W1980429682 @default.
- W2113248633 cites W1980446456 @default.
- W2113248633 cites W1981907501 @default.
- W2113248633 cites W1982358147 @default.
- W2113248633 cites W1982671982 @default.
- W2113248633 cites W1982779826 @default.
- W2113248633 cites W1984723477 @default.
- W2113248633 cites W1984878769 @default.
- W2113248633 cites W1985736575 @default.
- W2113248633 cites W1986310174 @default.
- W2113248633 cites W1986382011 @default.
- W2113248633 cites W1986644348 @default.
- W2113248633 cites W1988934232 @default.
- W2113248633 cites W1989023814 @default.
- W2113248633 cites W1989173376 @default.
- W2113248633 cites W1990695582 @default.
- W2113248633 cites W1991057622 @default.
- W2113248633 cites W1991638471 @default.
- W2113248633 cites W1991914628 @default.
- W2113248633 cites W1992321334 @default.
- W2113248633 cites W1995024297 @default.
- W2113248633 cites W1995689082 @default.
- W2113248633 cites W1996427848 @default.
- W2113248633 cites W1997054581 @default.
- W2113248633 cites W1997133977 @default.
- W2113248633 cites W1998288323 @default.
- W2113248633 cites W1999284237 @default.
- W2113248633 cites W1999791015 @default.
- W2113248633 cites W2001463762 @default.
- W2113248633 cites W200206446 @default.
- W2113248633 cites W2002933021 @default.
- W2113248633 cites W2003973265 @default.
- W2113248633 cites W2004174417 @default.
- W2113248633 cites W2004234375 @default.
- W2113248633 cites W2004937076 @default.
- W2113248633 cites W2005886497 @default.
- W2113248633 cites W2006351383 @default.
- W2113248633 cites W2008954710 @default.
- W2113248633 cites W2011063945 @default.
- W2113248633 cites W2011760470 @default.
- W2113248633 cites W2012017856 @default.
- W2113248633 cites W2012949390 @default.