Foundational investigations in quantum mechanics, both experimental and theoretical, gave birth to the field of quantum information science. Nevertheless, the foundations of quantum mechanics themselves remain hotly debated in the scientific community, and no consensus on essential questions has been reached. Here, we present the results of a poll carried out among 33 participants of a conference on the foundations of quantum mechanics. The participants completed a questionnaire containing 16 multiple-choice questions probing opinions on quantum-foundational issues. Participants included physicists, philosophers, (...) and mathematicians. We describe our findings, identify commonly held views, and determine strong, medium, and weak correlations between the answers. Our study provides a unique snapshot of current views in the field of quantum foundations, as well as an analysis of the relationships between these views. (shrink)
Focused correlation compares the degree of association within an evidence set to the degree of association in that evidence set given that some hypothesis is true. A difference between the confirmation lent to a hypothesis by one evidence set and the confirmation lent to that hypothesis by another evidence set is robustly tracked by a difference in focused correlations of those evidence sets on that hypothesis, provided that all the individual pieces of evidence are equally, positively relevant to that hypothesis. (...) However, that result depends on a very strong equal relevance condition on individual pieces of evidence. In this essay, we prove tracking results for focused correlation analogous to Wheeler and Scheines’s results but for cases involving unequal relevance. Our result is robust as well, and we retain conditions for bidirectional tracking between incremental confirmation measures and focused correlation. (shrink)
Recently, W. H. Zurek presented a novel derivation of the Born rule based on a mechanism termed environment-assisted invariance, or “envariance” [W. H. Zurek, Phys. Rev. Lett. 90, 120404 ]. We review this approach and identify fundamental assumptions that have implicitly entered into it, emphasizing issues that any such derivation is likely to face.
We analyze seemingly contradictory claims in the literature about the role played by decoherence in ensuring classical behavior for the chaotically tumbling satellite Hyperion. We show that the controversy is resolved once the very different assumptions underlying these claims are recognized. In doing so, we emphasize the distinct notions of the problem of classicality in the ensemble interpretation of quantum mechanics and in decoherence-based approaches that are aimed at addressing the measurement problem.
This article presents the recent literature about the church Nossa Senhora da Consolação, considered through the prism of the study of sacred art. After a historical overview about the neighborhood and the ancient temple of Consolation, will be highlighted some most relevant artistic aspects of architecture and works of art gathered in the sacred building, designed by German engineer Maximilian Emil Hehl, whose inspiration reports to the formal and stylistic features of Romanesque architecture as well as the influences of (...) eclecticism with a predominance of Romanesque Revival architecture and Gothic Revival in São Paulo in the early twentieth century. (shrink)
This article presents the recent literature about Cathedral of See considered from the History of Arts perspective in São Paulo. After highlight some functional, stylistic and historical data about the building idealized by Brazilian Archbishop Dom Duarte Leopoldo e Silva and designed by German engineer Maximilian Emil Hehl , will be highlighted the most important artistic aspects of architecture and Works of Art gathered in the paulist sacred buildings. The article also highlights the Cathedral in its connection with the (...) history of the city and the Archdiocese of São Paulo. (shrink)
Schlosshauer has criticized the conclusion of Wiebe and Ballentine (Phys. Rev. A 72:022109, 2005) that decoherence is not essential for the emergence of classicality from quantum mechanics. I reply to the issues raised in his critique, which range from the interpretation of quantum mechanics to the criterion for classicality, and conclude that the role of decoherence in these issues is much more restricted than is often claimed.
Maximilian Voloshin turned to classical metres after he moved to Crimea that in his consciousness had associations with Hellas. Also, his friendship with Vyacheslav Ivanov became an important stimulus. Initially, Voloshin used the same metres that can be found in Ivanov's collection of poems Кормчие звезды. However, their form shows that Voloshin was well familiar with classical poetry.