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  1. added 2019-04-08
    Universality Reduced.Alexander Franklin - 2019 - Philosophy of Science 86 (5):1295-1306.
    The universality of critical phenomena is best explained by appeal to the Renormalisation Group (RG). Batterman and Morrison, among others, have claimed that this explanation is irreducible. I argue that the RG account is reducible, but that the higher-level explanation ought not to be eliminated. I demonstrate that the key assumption on which the explanation relies – the scale invariance of critical systems – can be explained in lower-level terms; however, we should not replace the RG explanation with a bottom-up (...)
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  2. added 2018-07-13
    Emergence Without Limits: The Case of Phonons.Alexander Franklin & Eleanor Knox - 2018 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 64:68-78.
    Recent discussions of emergence in physics have focussed on the use of limiting relations, and often particularly on singular or asymptotic limits. We discuss a putative example of emergence that does not fit into this narrative: the case of phonons. These quasi-particles have some claim to be emergent, not least because the way in which they relate to the underlying crystal is almost precisely analogous to the way in which quantum particles relate to the underlying quantum field theory. But there (...)
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  3. added 2017-12-01
    How the Models of Chemistry Vie.James R. Hofmann - 1990 - PSA: Proceedings of the Biennial Meeting of the Philosophy of Science Association 1990:405 - 419.
    Building upon Nancy Cartwright's discussion of models in How the Laws of Physics Lie, this paper addresses solid state research in transition metal oxides. Historical analysis reveals that in this domain models function both as the culmination of phenomenology and the commencement of theoretical explanation. Those solid state chemists who concentrate on the description of phenomena pertinent to specific elements or compounds assess models according to different standards than those who seek explanation grounded in approximate applications of the Schroedinger equation. (...)
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  4. added 2017-09-29
    The Next Big Accelerator.John Cramer - unknown
    Alternate View Column AV-110 Keywords: linear electron positron collider e+e- high energy particle physics accelerator tunnel USA Japan Germany Published in the February-2002 issue of Analog Science Fiction & Fact Magazine ; This column was written and submitted 8/4/2001 and is copyrighted ©2001 by John G. Cramer. All rights reserved. No part may be reproduced in any form without the explicit permission of the author.
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  5. added 2016-09-12
    Phenomenologism Vs Fundamentalism: The Case of Superconductivity.Towfic Shomar - 2008 - CURRENT SCIENCE, 94 (10):1256-1264.
    This article argues that phenomenological treatment of physical problems is more powerful than fundamental treatment. Developments in the field of superconductivity present us with a clear example of such superiority. The BCS (Bardeen, Cooper and Schrieffer) was accepted as the fundamental theory of superconductivity for a long time. Nevertheless, Landau and Ginzburg phenomenological model has so far proven to be a more fruitful theoretical representation to understand and to predict the features of superconductivity and superconductive materials.
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  6. added 2015-12-06
    Hysteresis Model of Unconscious-Conscious Interconnection: Exploring Dynamics on M-Adic Trees.Giuseppe Iurato & Andrei Khrennikov - 2015 - P-Adic Numbers, Ultrametric Analysis, and Applications 7 (4):312-321.
    In this brief note, we focus attention on a possible implementation of a basic hysteretic pattern (the Preisach one), suitably generalized, into a formal model of unconscious-conscious interconnection and based on representation of mental entities by m-adic numbers.
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  7. added 2014-03-09
    Mathematical Rigor in Physics: Putting Exact Results in Their Place.Axel Gelfert - 2005 - Philosophy of Science 72 (5):723-738.
    The present paper examines the role of exact results in the theory of many‐body physics, and specifically the example of the Mermin‐Wagner theorem, a rigorous result concerning the absence of phase transitions in low‐dimensional systems. While the theorem has been shown to hold for a wide range of many‐body models, it is frequently ‘violated’ by results derived from the same models using numerical techniques. This raises the question of how scientists regulate their theoretical commitments in such cases, given that the (...)
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  8. added 2011-01-24
    Modeling High-Temperature Superconductors: Correspondence at Bay?Stephan Hartmann - 2008 - In Lena Soler (ed.), Rethinking Scientific Change. Stabilities, Ruptures, Incommensurabilities? Springer. pp. 107--128.
    How does a predecessor theory relate to its successor? According to Heinz Post’s General Correspondence Principle, the successor theory has to account for the em- pirical success of its predecessor. After a critical discussion of this principle, I outline and discuss various kinds of correspondence relations that hold between successive scientific theories. I then look in some detail at a case study from contemporary physics: the various proposals for a theory of high-temperature superconductivity. The aim of this case study is (...)
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