Foundations of Physics最新文献_第10页

Reconstruction of f(R) Gravity from Cosmological Unified Dark Fluid Model 从宇宙学统一暗流模型重构 f(R) 引力

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-02-19 DOI: 10.1007/s10701-023-00751-5

Esraa Ali Elkhateeb

引用次数: 0

Schrödinger Cats and Quantum Complementarity 薛定谔猫与量子互补性

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-01-25 DOI: 10.1007/s10701-023-00750-6

Lorenzo Maccone

{"title":"Schrödinger Cats and Quantum Complementarity","authors":"Lorenzo Maccone","doi":"10.1007/s10701-023-00750-6","DOIUrl":"10.1007/s10701-023-00750-6","url":null,"abstract":"<div><p>Complementarity tells us we cannot know precisely the values of all the properties of a quantum object at the same time: the precise determination of one property implies that the value of some other (complementary) property is undefined. E.g. the precise knowledge of the position of a particle implies that its momentum is undefined. Here we show that a Schrödinger cat has a well defined value of a property that is complementary to its “being dead or alive” property. Then, thanks to complementarity, it has an undefined value of the property “being dead or alive”. In other words, the cat paradox is explained through quantum complementarity: of its many complementary properties, any quantum system, such as a cat, can have a well defined value only of one at a time. Schrödinger’s cat has a definite value of a property which is complementary to “being dead or alive”, so it is neither dead nor alive. Figuratively one can say it is both dead <i>and</i> alive. While this interpretation only uses textbook concepts (the Copenhagen interpretation), apparently it has never explicitly appeared in the literature. We detail how to build an Arduino based simulation of Schrödinger’s experiment based on these concepts for science outreach events.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"54 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10701-023-00750-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139583537","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

Fundamental Units in Gravitational, Electromagnetic and Weak (Fermi) Interactions 引力、电磁和弱（费米）相互作用的基本单位

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-01-22 DOI: 10.1007/s10701-023-00741-7

M. Novello, V. Antunes

引用次数: 0

Non-Relativistic Regime and Topology: Topological Term in the Einstein Equation 非相对论时态与拓扑学：爱因斯坦方程中的拓扑术语

IF 1.2 3区物理与天体物理

Foundations of Physics Pub Date : 2024-01-19 DOI: 10.1007/s10701-023-00749-z

Quentin Vigneron

引用次数: 0

On the Reality of the Quantum State Once Again: A No-Go Theorem for (psi)-Ontic Models 再论量子态的现实性：量子模型的 "不走 "定理

IF 1.5 3区物理与天体物理

Foundations of Physics Pub Date : 2024-01-11 DOI: 10.1007/s10701-023-00748-0

Gabriele Carcassi, Andrea Oldofredi, Christine A. Aidala

引用次数: 0

What Does ‘(Non)-absoluteness of Observed Events’ Mean? 观察事件的（非）模糊性 "意味着什么？

IF 1.5 3区物理与天体物理

Foundations of Physics Pub Date : 2024-01-10 DOI: 10.1007/s10701-023-00747-1

Emily Adlam

{"title":"What Does ‘(Non)-absoluteness of Observed Events’ Mean?","authors":"Emily Adlam","doi":"10.1007/s10701-023-00747-1","DOIUrl":"10.1007/s10701-023-00747-1","url":null,"abstract":"<div><p>Recently there have emerged an assortment of theorems relating to the ‘absoluteness of emerged events,’ and these results have sometimes been used to argue that quantum mechanics may involve some kind of metaphysically radical non-absoluteness, such as relationalism or perspectivalism. However, in our view a close examination of these theorems fails to convincingly support such possibilities. In this paper we argue that the Wigner’s friend paradox, the theorem of Bong et al and the theorem of Lawrence et al are all best understood as demonstrating that if quantum mechanics is universal, and if certain auxiliary assumptions hold, then the world inevitably includes various forms of ‘disaccord,’ but this need not be interpreted in a metaphysically radical way; meanwhile, the theorem of Ormrod and Barrett is best understood either as an argument for an interpretation allowing multiple outcomes per observer, such as the Everett approach, or as a proof that quantum mechanics cannot be universal in the sense relevant for this theorem. We also argue that these theorems taken together suggest interesting possibilities for a different kind of relational approach in which <i>interaction</i> states are relativized whilst observed events are absolute, and we show that although something like ‘retrocausality’ might be needed to make such an approach work, this would be a very special kind of retrocausality which would evade a number of common objections against retrocausality. We conclude that the non-absoluteness theorems may have a significant role to play in helping converge towards an acceptable solution to the measurement problem.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"54 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10701-023-00747-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139406719","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

Learning from Paradoxes 从矛盾中学习

IF 1.5 3区物理与天体物理

Foundations of Physics Pub Date : 2024-01-03 DOI: 10.1007/s10701-023-00733-7

Alessandro Bettini

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Decoherence as a High-Dimensional Geometrical Phenomenon 退相干是一种高维几何现象

IF 1.5 3区物理与天体物理

Foundations of Physics Pub Date : 2023-12-27 DOI: 10.1007/s10701-023-00740-8

Antoine Soulas

引用次数: 0

A Set-Theoretic Analysis of the Black Hole Entropy Puzzle 黑洞熵之谜的集合论分析

IF 1.5 3区物理与天体物理

Foundations of Physics Pub Date : 2023-12-21 DOI: 10.1007/s10701-023-00737-3

Gábor Etesi

{"title":"A Set-Theoretic Analysis of the Black Hole Entropy Puzzle","authors":"Gábor Etesi","doi":"10.1007/s10701-023-00737-3","DOIUrl":"10.1007/s10701-023-00737-3","url":null,"abstract":"<div><p>Motivated by the known mathematical and physical problems arising from the current mathematical formalization of the physical spatio-temporal continuum, as a substantial technical clarification of our earlier attempt (Etesi in Found Sci 25:327–340, 2020), the aim in this paper is twofold. Firstly, by interpreting Chaitin’s variant of Gödel’s first incompleteness theorem as an inherent uncertainty or fuzziness present in the set of real numbers, a set-theoretic entropy is assigned to it using the Kullback–Leibler relative entropy of a pair of Riemannian manifolds. Then exploiting the non-negativity of this relative entropy an abstract Hawking-like area theorem is derived. Secondly, by analyzing Noether’s theorem on symmetries and conserved quantities, we argue that whenever the four dimensional space-time continuum containing a single, stationary, asymptotically flat black hole is modeled by the set of real numbers in the mathematical formulation of general relativity, the hidden set-theoretic entropy of this latter structure reveals itself as the entropy of the black hole (proportional to the area of its “instantaneous” event horizon), indicating that this apparently physical quantity might have a pure set-theoretic origin, too.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"54 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10701-023-00737-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138953223","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

Modeling the Past Hypothesis: A Mechanical Cosmology 模拟过去假说：机械宇宙学

IF 1.5 3区物理与天体物理

Foundations of Physics Pub Date : 2023-12-19 DOI: 10.1007/s10701-023-00745-3

Jordan Scharnhorst, Anthony Aguirre

引用次数: 0