发布求助
文献互助 智能选刊 最新文献

Foundations of Physics最新文献

筛选
英文 中文
Emergent Phenomena in Nature: A Paradox with Theory? 自然涌现现象:理论悖论?
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-08-25 DOI: 10.1007/s10701-023-00721-x
Christiaan J. F. van de Ven
{"title":"Emergent Phenomena in Nature: A Paradox with Theory?","authors":"Christiaan J. F. van de Ven","doi":"10.1007/s10701-023-00721-x","DOIUrl":"10.1007/s10701-023-00721-x","url":null,"abstract":"<div><p>The existence of various physical phenomena stems from the concept called <i>asymptotic emergence</i>, that is, they seem to be exclusively reserved for certain limiting theories. Important examples are spontaneous symmetry breaking (SSB) and phase transitions: these would only occur in the classical or thermodynamic limit of underlying finite quantum systems, since for finite quantum systems, due to the uniqueness of the relevant states, such phenomena are excluded by Theory. In Nature, however, finite quantum systems describing real materials clearly exhibit such effects. In this paper we discuss these apparently “paradoxical” phenomena and outline various ideas and mechanisms that encompass both theory and reality, from physical and mathematical points of view.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 5","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10701-023-00721-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4961208","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: 1
Mathematical Models of Photons 光子的数学模型
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-08-17 DOI: 10.1007/s10701-023-00708-8
Imants Bersons, Rita Veilande, Ojars Balcers
{"title":"Mathematical Models of Photons","authors":"Imants Bersons,&nbsp;Rita Veilande,&nbsp;Ojars Balcers","doi":"10.1007/s10701-023-00708-8","DOIUrl":"10.1007/s10701-023-00708-8","url":null,"abstract":"<div><p>Mathematics from the electromagnetic field quantization procedure and the soliton models of photons are used to construct a new 3D model of photons. Besides the interaction potential between the charged particle and the photons, which contains the annihilation and creation operators of photons, the new function for a description of free propagating photons is derived. This function presents the vector potential of the field, the function is a product of the harmonic oscillator eigenfunction with the well-defined coordinate of the oscillator and the Gaussian function of the polar radius in the transverse direction. In the article, the difference between the quantum mechanics of particles and photons is discussed.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43319486","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: 1
On Efforts to Decouple Early Universe Cosmology and Quantum Gravity Phenomenology 论早期宇宙宇宙学与量子引力现象学的解耦
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-08-14 DOI: 10.1007/s10701-023-00720-y
Mike D. Schneider
{"title":"On Efforts to Decouple Early Universe Cosmology and Quantum Gravity Phenomenology","authors":"Mike D. Schneider","doi":"10.1007/s10701-023-00720-y","DOIUrl":"10.1007/s10701-023-00720-y","url":null,"abstract":"<div><p>The Big Bang singularity in standard model cosmology suggests a program of study in ‘early universe’ quantum gravity phenomenology. Inflation is usually thought to undermine this program’s prospects by means of a dynamical diluting argument, but such a view has recently been disputed within inflationary cosmology, in the form of a ‘trans-Planckian censorship’ conjecture. Meanwhile, trans-Planckian censorship has been used outside of inflationary cosmology to motivate alternative early universe scenarios that are tightly linked to ongoing theorizing in quantum gravity. Against the resulting trend toward early universe quantum gravity phenomenology within and without inflation, Ijjas and Steindhardt suggest a further alternative: a ‘generalized cosmic censorship’ principle. I contrast the generalized cosmic censorship principle with the logic of its namesake, the cosmic censorship conjectures. I also remark on foundational concerns in the effective field theory approach to cosmology beyond the standard model, which would be based on that principle.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41368532","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 the Boundary of the Cosmos 关于宇宙的边界
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-08-12 DOI: 10.1007/s10701-023-00718-6
Daniel Linford
{"title":"On the Boundary of the Cosmos","authors":"Daniel Linford","doi":"10.1007/s10701-023-00718-6","DOIUrl":"10.1007/s10701-023-00718-6","url":null,"abstract":"<div><p>Intuitively, the totality of physical reality—the Cosmos—has a beginning only if (i) all parts of the Cosmos agree on the direction of time (the Direction Condition) and (ii) there is a boundary to the past of all non-initial spacetime points such that there are no spacetime points to the past of the boundary (the Boundary Condition). Following a distinction previously introduced by J. Brian Pitts, the Boundary Condition can be conceived of in two distinct ways: either topologically, i.e., in terms of a closed boundary, or metrically, i.e., in terms of the Cosmos having a finite past. This article proposes that the Boundary Condition should be posed disjunctively, modifies and improves upon the metrical conception of the Cosmos’s beginning in light of a series of surprising yet simple thought experiments, and suggests that the Direction and Boundary Conditions should be thought of as more fundamental to the concept of the Cosmos’s beginning than classical Big Bang cosmology.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42240712","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
Quantum Entanglement: An Analysis via the Orthogonality Relation 量子纠缠:基于正交关系的分析
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-08-07 DOI: 10.1007/s10701-023-00710-0
Shengyang Zhong
{"title":"Quantum Entanglement: An Analysis via the Orthogonality Relation","authors":"Shengyang Zhong","doi":"10.1007/s10701-023-00710-0","DOIUrl":"10.1007/s10701-023-00710-0","url":null,"abstract":"<div><p>In the literature there has been evidence that a kind of relational structure called a quantum Kripke frame captures the essential characteristics of the orthogonality relation between pure states of quantum systems, and thus is a good qualitative mathematical model of quantum systems. This paper adds another piece of evidence by providing a tensor-product construction of two finite-dimensional quantum Kripke frames. We prove that this construction is exactly the qualitative counterpart of the tensor-product construction of two finite-dimensional Hilbert spaces over the complex numbers, and thus show that composition of quantum systems, especially the phenomenon of quantum entanglement, can be modelled in the framework of quantum Kripke frames. The assumptions used in our construction hint that we need complex numbers in quantum theory. Moreover, for this construction, we give a new and interesting characterization of linear maps of trace 0 in terms of the orthogonality relation.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134795781","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
Black Hole Entropy from Non-dirichlet Sectors, and a Bounce Solution 非狄利克雷扇区的黑洞熵和反弹解
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-08-05 DOI: 10.1007/s10701-023-00719-5
I. Y. Park
{"title":"Black Hole Entropy from Non-dirichlet Sectors, and a Bounce Solution","authors":"I. Y. Park","doi":"10.1007/s10701-023-00719-5","DOIUrl":"10.1007/s10701-023-00719-5","url":null,"abstract":"<div><p>The relevance of gravitational boundary degrees of freedom and their dynamics in gravity quantization and black hole information has been explored in a series of recent works. In this work we further progress by focusing keenly on the genuine gravitational boundary degrees of freedom as the origin of black hole entropy. Wald’s entropy formula is scrutinized, and the reason that Wald’s formula correctly captures the entropy of a black hole examined. Afterwards, limitations of Wald’s method are discussed; a coherent view of entropy based on boundary dynamics is presented. The discrepancy observed in the literature between holographic and Wald’s entropies is addressed. We generalize the entropy definition so as to handle a time-dependent black hole. Large gauge symmetry plays a pivotal role. Non-Dirichlet boundary conditions and gravitational analogues of Coleman-De Luccia bounce solutions are central in identifying the microstates and differentiating the origins of entropies associated with different classes of solutions. The result in the present work leads to a view that black hole entropy is entanglement entropy in a thermodynamic setup.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42947942","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: 1
A Time-Symmetric Soliton Dynamics à la de Broglie De Broglie的时间对称孤子动力学
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-08-04 DOI: 10.1007/s10701-023-00711-z
Aurélien Drezet
{"title":"A Time-Symmetric Soliton Dynamics à la de Broglie","authors":"Aurélien Drezet","doi":"10.1007/s10701-023-00711-z","DOIUrl":"10.1007/s10701-023-00711-z","url":null,"abstract":"<div><p>In this work we develop a time-symmetric soliton theory for quantum particles inspired from works by de Broglie and Bohm. We consider explicitly a non-linear Klein–Gordon theory leading to monopolar oscillating solitons. We show that the theory is able to reproduce the main results of the pilot-wave interpretation for non interacting particles in a external electromagnetic field. In this regime, using the time symmetry of the theory, we are also able to explain quantum entanglement between several solitons and we reproduce the famous pilot-wave nonlocality associated with the de Broglie-Bohm theory.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48334483","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: 4
New Insights on the Quantum-Classical Division in Light of Collapse Models 从坍缩模型看量子经典除法的新见解
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-08-04 DOI: 10.1007/s10701-023-00716-8
Fernanda Torres, Sujoy K. Modak, Alfredo Aranda
{"title":"New Insights on the Quantum-Classical Division in Light of Collapse Models","authors":"Fernanda Torres,&nbsp;Sujoy K. Modak,&nbsp;Alfredo Aranda","doi":"10.1007/s10701-023-00716-8","DOIUrl":"10.1007/s10701-023-00716-8","url":null,"abstract":"<div><p>We argue, in light of Collapse Model interpretation of quantum theory, that the fundamental division between the quantum and classical behaviors might be analogous to the division of thermodynamic phases. A specific relationship between the collapse parameter <span>((lambda ))</span> and the collapse length scale (<span>(r_C)</span>) plays the role of the coexistence curve in usual thermodynamic phase diagrams. We further claim that our functional relationship between <span>(lambda)</span> and <span>(r_C)</span> is strongly supported by the existing International Germanium Experiment (IGEX) collaboration data. This result is preceded by a brief discussion of quantum measurement theory and the Ghirardi–Rimini–Weber (GRW) model applied to the free wavepacket dynamics.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42712078","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
Classical Electromagnetic Interaction of a Charge with a Solenoid or Toroid 电荷与螺线管或环面的经典电磁相互作用
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-08-02 DOI: 10.1007/s10701-023-00712-y
Timothy H. Boyer
{"title":"Classical Electromagnetic Interaction of a Charge with a Solenoid or Toroid","authors":"Timothy H. Boyer","doi":"10.1007/s10701-023-00712-y","DOIUrl":"10.1007/s10701-023-00712-y","url":null,"abstract":"<div><p>The Aharonov–Bohm phase shift in a particle interference pattern when electrons pass a long solenoid is identical in form with the optical interference pattern shift when a piece of retarding glass is introduced into one path of a two-beam optical interference pattern. The particle interference-pattern deflection is a relativistic effect of order <span>(1/c^{2})</span>, though this <i>relativity</i> aspect is rarely mentioned in the literature. Here we give a thorough analysis of the classical electromagnetic aspects of the interaction between a solenoid or toroid and a charged particle. We point out the magnetic Lorentz force which the solenoid or toroid experiences due to a passing charge. Although analysis in the rest frame of the solenoid or toroid will involve back Faraday fields on the charge, the analysis in the inertial frame in which the charge is initially at rest involves forces due to only <i>electric</i> fields where forces are equal in magnitude and opposite in direction. The classical analysis is made using the Darwin Lagrangian. We point out that the classical analysis suggests an angular deflection independent of Planck’s constant <span>(hbar )</span>, where the deflection magnitude is identical with that given by the traditional quantum analysis, but where the deflection direction is unambiguous.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42314925","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: 4
On the Continuum Fallacy: Is Temperature a Continuous Function? 关于连续性谬误：温度是连续函数吗？
IF 1.5 3区 物理与天体物理
Foundations of Physics Pub Date : 2023-07-30 DOI: 10.1007/s10701-023-00713-x
Aditya Jha, Douglas Campbell, Clemency Montelle, Phillip L. Wilson
{"title":"On the Continuum Fallacy: Is Temperature a Continuous Function?","authors":"Aditya Jha,&nbsp;Douglas Campbell,&nbsp;Clemency Montelle,&nbsp;Phillip L. Wilson","doi":"10.1007/s10701-023-00713-x","DOIUrl":"10.1007/s10701-023-00713-x","url":null,"abstract":"<div><p>It is often argued that the indispensability of continuum models comes from their empirical adequacy despite their decoupling from the microscopic details of the modelled physical system. There is thus a commonly held misconception that temperature varying across a region of space or time can always be accurately represented as a continuous function. We discuss three inter-related cases of temperature modelling — in phase transitions, thermal boundary resistance and slip flows — and show that the continuum view is fallacious on the ground that the microscopic details of a physical system are not necessarily decoupled from continuum models. We show how temperature discontinuities are present in both data (experiments and simulations) and phenomena (theory and models) and how discontinuum models of temperature variation may have greater empirical adequacy and explanatory power. The conclusions of our paper are: a) continuum idealisations are not indispensable to modelling physical phenomena and both continuous and discontinuous representations of phenomena work depending on the context; b) temperature is not necessarily a continuously defined function in our best scientific representations of the world; and c) that its continuity, where applicable, is a contingent matter. We also raise a question as to whether discontinuous representations should be considered truly de-idealised descriptions of physical phenomena.</p></div>","PeriodicalId":569,"journal":{"name":"Foundations of Physics","volume":"53 4","pages":""},"PeriodicalIF":1.5,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10701-023-00713-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41753614","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
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信