Decoherence, macrorealism and the causal arrow of time: There is more than meets the eye

Edgar Eslava

Research output: Chapter in Book/ReportConference contribution


In an attempt to test the limits of the current interpretation of quantum mechanics, according to which microscopic systems are always in a superposition of states, A. Leggett has proposed the thesis of macrorealism, according to which quantum mechanical super positions of macroscopically distinct states never occur. Leggett has also shown the basic features of some experimental tests that would decide definitively between quantum mechanics and macrorealism. In this paper I develop an interpretation of macrorealism from which the experimental results can be understood as examples of violations of the principle of induction in which macrorealism rests, opening the door for solving the tension between QM and macrorealism in terms of the backwards causation. According to this interpretation there is no need for appealing to any special role played by either observers or measurement apparatuses in order to explain what differentiates quantum systems from macroscopic ones, a difference that could now be defined partly in terms of their causal and temporal directionality.

Original languageEnglish (US)
Title of host publicationAlbert Einstein Century International Conference
Number of pages7
StatePublished - Dec 1 2006
EventAlbert Einstein Century International Conference - Paris, France
Duration: Jul 18 2005Jul 22 2005

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


ConferenceAlbert Einstein Century International Conference

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


Dive into the research topics of 'Decoherence, macrorealism and the causal arrow of time: There is more than meets the eye'. Together they form a unique fingerprint.

Cite this