Foundations of Physics最新文献_第5页

On the Growing Universe of Causal Set Theory—An Order-Type Approach 论因果集合论的成长宇宙--一种秩序型方法

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-06-20 DOI: 10.1007/s10701-024-00767-5

Tomasz Placek, Leszek Wroński

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A de Broglie–Bohm Model of Pure Shape Dynamics: N-Body system 纯形状动力学的 de Broglie-Bohm 模型：N 体系统

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-06-18 DOI: 10.1007/s10701-024-00776-4

Pooya Farokhi, Tim Koslowski, Pedro Naranjo, Antonio Vassallo

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Convivial Solipsism as a Maximally Perspectival Interpretation 作为最大视角诠释的共生唯我论

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-06-14 DOI: 10.1007/s10701-024-00773-7

Hervé Zwirn

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Univalence and Ontic Structuralism 单一性与本体结构主义

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-06-07 DOI: 10.1007/s10701-024-00768-4

Lu Chen

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Relational Quantum Mechanics and Intuitionistic Mathematics 关系量子力学与直觉数学

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-06-02 DOI: 10.1007/s10701-024-00774-6

Charles B. Crane

{"title":"Relational Quantum Mechanics and Intuitionistic Mathematics","authors":"Charles B. Crane","doi":"10.1007/s10701-024-00774-6","DOIUrl":"10.1007/s10701-024-00774-6","url":null,"abstract":"<div><p>We propose a model of physics that blends Rovelli’s relational quantum mechanics (RQM) interpretation with the language of finite information quantities (FIQs), defined by Gisin and Del Santo in the spirit of intuitionistic mathematics. We discuss deficiencies of using real numbers to model physical systems in general, and particularly under the RQM interpretation. With this motivation for an alternative mathematical language, we propose the use of FIQs to model the world under the RQM interpretation, wherein we view the propensities that make up a FIQ as quantifications of potential interaction. Under this model, the stable facts, relative facts, and shifting perspectives that make up the relational interpretation correspond to shifting digits and propensities of the FIQs. The model’s predictions agree with those of both classical and quantum physics, and it is indeterministic. We also propose explanations, with examples, for how the propensities of a FIQ are distributed, and how its digits become actualized. This is equivalent to the notion of the measurement problem, and the question of what causes wave function collapse. In short, by stepping through the “new door” opened by the language of FIQs, we attempt to describe the world under the relational interpretation.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"54 3","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141194921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On Fermi’s Resolution of the “4/3 Problem” in the Classical Theory of the Electron 论费米解决电子经典理论中的 "4/3 问题

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-05-28 DOI: 10.1007/s10701-024-00770-w

Donato Bini, Andrea Geralico, Robert T. Jantzen, Remo Ruffini

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Phenomenology, Perspectivalism and (Quantum) Physics 现象学、透视学和（量子）物理学

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-05-28 DOI: 10.1007/s10701-024-00769-3

Steven French

{"title":"Phenomenology, Perspectivalism and (Quantum) Physics","authors":"Steven French","doi":"10.1007/s10701-024-00769-3","DOIUrl":"10.1007/s10701-024-00769-3","url":null,"abstract":"<div><p>It has been claimed that Massimi’s recent perspectival approach to science sits in tension with a realist stance. I shall argue that this tension can be defused in the quantum context by recasting Massimi’s perspectivalism within a phenomenological framework. I shall begin by indicating how the different but complementary forms of the former are manifested in the distinction between certain so-called ‘-epistemic’ and ‘-ontic’ understandings of quantum mechanics, namely QBism and Relational Quantum Mechanics, respectively. A brief consideration of Dieks’ perspectivism will then lead to a consideration of the much-maligned and typically dismissed role of the observer in the measurement process. This opens the door to London and Bauer’s presentation of a form of ‘phenomenological quantum perspectivalism’ that brings together Massimi’s two forms and explicitly eschews the ‘naïve’ realism that creates the above tension. I shall conclude with some reflections on how intersubjectivity can still be established within this framework, focusing in particular on how Massimi’s idea of ‘interlacing’ scientific perspectives can be accommodated, using the example of a ‘new cosmopolitanism’ that gave rise to Bose-Einstein statistics.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"54 3","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10701-024-00769-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141172238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PBR, Nonreality and Entangled Measurement PBR、非现实性和纠缠测量

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-05-28 DOI: 10.1007/s10701-024-00772-8

Gábor Hofer-Szabó

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Foundational Issues in Group Field Theory 群体场论的基础问题

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-05-20 DOI: 10.1007/s10701-024-00763-9

Álvaro Mozota Frauca

{"title":"Foundational Issues in Group Field Theory","authors":"Álvaro Mozota Frauca","doi":"10.1007/s10701-024-00763-9","DOIUrl":"10.1007/s10701-024-00763-9","url":null,"abstract":"<div><p>In this paper I offer an introduction to group field theory (GFT) and to some of the issues affecting the foundations of this approach to quantum gravity. I first introduce covariant GFT as the theory that one obtains by interpreting the amplitudes of certain spin foam models as Feynman amplitudes in a perturbative expansion. However, I argue that it is unclear that this definition of GFTs amounts to something beyond a computational rule for finding these transition amplitudes and that GFT doesn’t seem able to offer any new insight into the foundations of quantum gravity. Then, I move to another formulation of GFT which I call canonical GFT and which uses the standard structures of quantum mechanics. This formulation is of extended use in cosmological applications of GFT, but I argue that it is only heuristically connected with the covariant version and spin foam models. Moreover, I argue that this approach is affected by a version of the problem of time which raises worries about its viability. Therefore, I conclude that there are serious concerns about the justification and interpretation of GFT in either version of it.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"54 3","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10701-024-00763-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141123026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantum Mechanics Based on an Extended Least Action Principle and Information Metrics of Vacuum Fluctuations 基于扩展最小作用原理和真空波动信息度量的量子力学

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-05-18 DOI: 10.1007/s10701-024-00757-7

Jianhao M. Yang

{"title":"Quantum Mechanics Based on an Extended Least Action Principle and Information Metrics of Vacuum Fluctuations","authors":"Jianhao M. Yang","doi":"10.1007/s10701-024-00757-7","DOIUrl":"10.1007/s10701-024-00757-7","url":null,"abstract":"<div><p>We show that the formulations of non-relativistic quantum mechanics can be derived from an extended least action principle. The principle can be considered as an extension of the least action principle from classical mechanics by factoring in two assumptions. First, the Planck constant defines the minimal amount of action a physical system needs to exhibit during its dynamics in order to be observable. Second, there is constant vacuum fluctuation along a classical trajectory. A novel method is introduced to define the information metrics to measure additional observability due to vacuum fluctuations, which is then converted to an additional action through the first assumption. Applying the variational principle to minimize the total actions allows us to recover the basic quantum formulations including the uncertainty relation and the Schrödinger equation in the position representation. In the momentum representation, the same method can be applied to obtain the Schrödinger equation for a free particle while further investigation is still needed for a particle with an external potential. Furthermore, the principle brings in new results on two fronts. At the conceptual level, we find that the information metrics for vacuum fluctuations are responsible for the origin of the Bohm quantum potential. Even though the Bohm potential for a bipartite system is inseparable, the underlying vacuum fluctuations are local. Thus, inseparability of the Bohm potential does not justify a non-local causal relation between the two subsystems. At the mathematical level, quantifying the information metrics for vacuum fluctuations using more general definitions of relative entropy results in a generalized Schrödinger equation that depends on the order of relative entropy. The extended least action principle is a new mathematical tool. It can be applied to derive other quantum formalisms such as quantum scalar field theory.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"54 3","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10701-024-00757-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141059269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0