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显示 2025年07月22日, 星期二 新的列表

总共 7 条目
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[1] arXiv:2507.14150 (交叉列表自 physics.gen-ph) [中文pdf, pdf, html, 其他]
标题: dc-SQUID阵列中量子引力黑洞模型的模拟实验
标题: Analogue simulation of quantum gravity black hole models in a dc-SQUID array
Marco D. Maceda, Carlos Sabín
评论: 7页,2图
期刊参考: 梅塞达,M.D.,萨宾,C. 一种在直流SQUID阵列中量子引力黑洞模型的模拟。Sci Rep 15,20626(2025)
主题: 一般物理 (physics.gen-ph)

我们提出一种模拟量子实验,用于研究从无限远处坍缩和反弹的恒星。 在这个包含黑洞和白洞的时空中,我们放置一个以光速传播的无质量标量场,该场受曲率影响。 我们使用一个SQUID阵列来模拟这个系统,在此我们可以利用外部磁场改变光的传播。 我们考虑了向内和向外辐射,产生了两种不同的情况:下游和上游辐射。 我们计算了这两种情况下模拟所需的磁通量分布,并发现前者更适用于实验。

We propose an analog quantum simulation for studying the collapse and bounce of a star from infinity. In this spacetime, which encompasses both a black hole and a white hole, we place a massless scalar field that propagates at the speed of light, which is modified by the curvature. We simulate this system using an SQUID array, in which we can alter the propagation of light using an external magnetic field. We consider both infalling and outfalling radiation, giving rise to two different scenarios: downstream and upstream radiation. We compute the magnetic flux profile required by the simulation in both cases and find out that the former is more experimentally suitable.

[2] arXiv:2507.14168 (交叉列表自 physics.gen-ph) [中文pdf, pdf, 其他]
标题: 手性三元组:手性,手性素和时间手性
标题: The Chirality Trinity: Chirality, Chirality Prime and Time Chirality
Sang-Wook Cheong, Fei-Ting Huang
评论: 10页,5图
主题: 一般物理 (physics.gen-ph) ; 材料科学 (cond-mat.mtrl-sci)

时间的流动在宇宙中的任何空间位置和方向上都只有一个方向。 缺乏镜像对称性的手性物体,无论其位置或方向如何,都会保持其手性。 尽管时间与手性看似独立,但它们共享一些共同特征,例如普遍性——适用于“任何位置和方向”——以及二元性,如时间流动的前后方向与手性的左右方向。 我们引入了时间手性的概念,并讨论了时间手性与传统手性之间的共轭关系。 我们探讨了时间手性如何在某些磁态中表现,并研究了与时间手性磁态相关的新物理现象。 这一讨论为真正的时间反演对称性破缺和时间非互易性提供了新的视角。

The flow of time moves in one direction in any spatial position and orientation in this universe. Chiral objects, which lack mirror symmetry, retain their chirality regardless of their position or orientation. Despite being seemingly independent, time and chirality share common features such as universality -- applying to 'any position and orientation' -- and a binary nature, such as forward/backward time flow versus left/right chirality. We introduce the concept of Time Chirality and discuss the conjugate relationship between time chirality and traditional chirality. We explore how time chirality can manifest in certain magnetic states, and examine the novel physical phenomena associated with time-chiral magnetic states. This discussion offers a fresh perspective on true time reversal symmetry breaking and temporal nonreciprocity.

[3] arXiv:2507.14174 (交叉列表自 physics.gen-ph) [中文pdf, pdf, html, 其他]
标题: Wess Zumino 任意标量超对称模型的 BRS 上同调与奇异对和奇异三元组 (E2)
标题: The BRS Cohomology of the Wess Zumino Chiral Scalar supersymmetric model with exotic pairs and exotic triplets (E2)
John A. Dixon
评论: 70页
主题: 一般物理 (physics.gen-ph) ; 高能物理 - 理论 (hep-th)

使用谱序列方法,本文推进了Wess Zumino超对称作用的BRS上同调的一些构造。 一个重要的缺失部分是包含了场变分的源项。 在本文中,这些源项被称为伪场。 由于结果中最有趣的部分包含未饱和的旋量指标,我们引入了一个常数旋量来饱和这些指标。 在零维时,这产生了一组新的不变量和与之密切相关的理论中可能的超对称异常的新集合,我们称之为“奇异对”。 在一维时,这变得更加复杂,理论中增加了一个新的ghost电荷-1项,我们称之为变化,我们称之为“奇异三元组”。 对于更高维度和更高自旋的情况,似乎会出现更多的复杂性。 这些奇异对和三元组受到一些从谱序列中产生的简单方程的约束。 奇异对的不变量都依赖于伪场,这意味着这些不变量的场部分不是超对称的,尽管这些不变量位于超对称的上同调空间中。 在本文中,我们研究了低自旋和低维度的BRS上同调。

Using the spectral sequence method, this paper advances some of the construction of the BRS cohomology of the Wess Zumino supersymmetric action. An important missing part was the inclusion of the sources for the variations of the fields. In this paper, these sources are called pseudofields. Since the most interesting part of the result contains unsaturated spinor indices, we include a constant spinor to saturate those indices. At dimension zero, this gives rise to a new set of invariants and a closely related new set of possible supersymmetry anomalies in the theory, and we call this an `exotic pair'. At dimension one, this becomes more complicated, and the theory adds a new ghost charge - 1 term, which we call a change, and we call this an `exotic triplet'. For higher dimension and higher spin, it appears that more complications are likely to occur. These exotic pairs and triplets are constrained by some simple equations which arise from the spectral sequence. The invariants of the exotic pairs are all dependent on the pseudofields, which means that the field parts of these invariants are not supersymmetric, though the invariants are in the cohomology space of supersymmetry. In this paper we examine the BRS cohomology for low spins and low dimensions.

[4] arXiv:2507.14203 (交叉列表自 physics.gen-ph) [中文pdf, pdf, html, 其他]
标题: 有限非局部全纯统一量子场论
标题: Finite Nonlocal Holomorphic Unified Quantum Field Theory
J. W. Moffat, E. J. Thompson
评论: 16页
主题: 一般物理 (physics.gen-ph) ; 高能物理 - 理论 (hep-th)

在本文中,非局部有限量子引力框架被融入到复数四维流形上的复数非黎曼全纯统一场论中。通过将整函数调节器$F(\Box) = \exp\!\bigl(\Box / M_*^2\bigr)$引入全纯爱因斯坦-希尔伯特作用量,我们在所有环路阶次上实现了微扰紫外有限性,同时保持了BRST不变性和全纯规范对称性。我们推导了修改的规范-引力耦合部分,在轮廓正则化的度规背景中进行了一个环路有效作用量计算,并证明了没有新的反常项和有问题的复极结构。将该构造扩展到非平凡的弯曲背景,我们验证了广义相对论的红外恢复和完整的全纯规范不变性。最后,我们探讨了现象学后果,包括自对偶背景中修正的引力子和规范玻色子散射振幅,正则化施瓦茨希尔德和克尔几何的有限霍金谱,以及等效原理的测试建议。这项工作为自洽、幺正的四维量子引力和全纯统一场论框架奠定了基础。

In this paper the non-local finite quantum-gravity framework is incorporated into the Complex non-Riemannian Holomorphic Unified Field Theory formulated on a complexified four-dimensional manifold. By introducing entire-function regulators $F(\Box) = \exp\!\bigl(\Box / M_*^2\bigr)$ into the holomorphic Einstein-Hilbert action, we achieve perturbative UV finiteness at all loop orders, while preserving BRST invariance and holomorphic gauge symmetry. We derive the modified gauge-gravity coupling sector, perform a one-loop effective-action computation in a contour-regularized metric background, and demonstrate the absence of new counterterms and problematic complex-pole structures. Extending the construction to nontrivial curved backgrounds, we verify infrared recovery of General Relativity and full holomorphic gauge invariance. Finally, we explore phenomenological consequences, including corrected graviton and gauge-boson scattering amplitudes in self-dual backgrounds, finite Hawking spectra for regularized Schwarzschild and Kerr geometries, and proposed tests of the equivalence principle. This work lays the foundation for a self-consistent, unitary four-dimensional quantum-gravity and Holomorphic Unified Field Theory framework.

[5] arXiv:2507.14250 (交叉列表自 physics.gen-ph) [中文pdf, pdf, html, 其他]
标题: 通过原初大爆炸核合成和重子生成对Rényi熵的约束
标题: Constraints on Rényi Entropy through Primordial Big-Bang Nucleosynthesis and Baryogenesis
Ahmad Sheykhi, Ava Shahbazi Sooraki
评论: 13页,5图
主题: 一般物理 (physics.gen-ph)

Rényi熵是一种Boltzmann-Gibbs熵的一参数推广,为在宇宙学中探测量子引力效应提供了有希望的框架。通过修改视界的有效面积-熵关系,Rényi熵可以改变早期宇宙的膨胀动力学,对大爆炸核合成具有潜在影响。在本工作中,我们推导了Rényi熵范式下的修正弗里德曼方程,并研究了它们对轻元素原始丰度的影响,氘($D$)、氦-4($_{}^{4}\textit{He}$)、锂-7($_{}^{7}\textit{Li}$)和重子生成。利用普朗克数据、原始丰度数据和关于重子生成的观测数据,我们对Rényi参数设定了严格的限制。此外,我们探讨了Rényi熵修正是否可以缓解长期存在的锂差异问题。这项研究首次从BBN角度对Rényi宇宙学进行了系统约束,并突显了非广延热力学在早期宇宙物理中的作用。我们的分析表明,获得的Rényi参数$\lambda$的范围在氦-4和氘之间存在重叠,但尽管存在一个小的差异,这一重叠区域与锂-7获得的范围不一致。范围之间的这种小差异提出了在修改的宇宙学情景中缓解\textit{锂问题}的可能性。此外,我们提出了在Rényi宇宙学框架下宇宙时间和温度之间的关系。我们观察到,Rényi参数的增加会提高早期宇宙的温度。

The R\'{e}nyi entropy, a one-parameter generalization of Boltzmann-Gibbs entropy, offers a promising framework for probing quantum gravitational effects in cosmology. By modifying the entropy-area relation of the apparent horizon, R\'{e}nyi entropy can alter the expansion dynamics of the early universe, with potential implications for Big-Bang Nucleosynthesis. In this work, we derive the modified Friedmann equations within the R\'{e}nyi entropy paradigm and investigate their impact on the primordial abundances of light elements Deuterium ($D$), Helium-4 ($_{}^{4}\textit{He}$), Lithium-7 ($_{}^{7}\textit{Li}$) and baryogenesis. Using observational constraints from Planck, primordial abundance data and observational data on baryogenesis, we put stringent bounds on the R\'{e}nyi parameter. Furthermore, we explore whether R\'{e}nyi entropy corrections could mitigate the long-standing Lithium discrepancy. This study provides the first systematic constraints on R\'{e}nyi cosmology from BBN and highlights the role of nonextensive thermodynamics in early-universe physics. Our analysis shows that the obtained ranges for the R\'{e}nyi parameter $\lambda$ exhibit a overlap for the Helium-4 and Deuterium, but this overlapping region-despite a small discrepancy-is inconsistent with the range obtained from Lithium-7. This small mismatch between the ranges raises the possibility of alleviating the \textit{Lithium Problem} in the modified cosmology scenarios. Furthermore, we present the relationship between the cosmic time and temperature within the framework of R\'{e}nyi cosmology. We observe that an increase in the R\'{e}nyi parameter increase the temperature of the early universe.

替换提交 (展示 2 之 2 条目 )

[6] arXiv:2409.15390 (替换) [中文pdf, pdf, html, 其他]
标题: 量子决定论和完备性通过不可区分性和长时间粒子探测得以恢复
标题: Quantum determinism and completeness restored by indistinguishability and long-time particle detection
Patrick Navez, Henni Ouerdane
评论: 评论和讨论是欢迎的
主题: 一般物理 (physics.gen-ph) ; 量子物理 (quant-ph)

我们主张,量子物理中的测量数据只能严格地被解释为统计性宏观过程的结果,同时考虑到相同粒子的不可区分性。 在使用一个完整的量子场论模型来描述测量装置与研究对象相互作用作为一个系统的情况下,量子决定论在原则上是可能的。 相反,任何依赖于玻恩规则的方法都会将量子系统的动力学与其在测量过程中相互作用的探测器的动力学区分开来。 在本工作中,我们对这一测量假设应用于单个事件信号的有效性进行了批判性分析。 事实上,一旦同时考虑不可区分性和允许无限相互作用时间的散射方法,"单个"粒子的概念就变得不充分了,从而阻止了两次连续测量事件的可分离性。 在这种情况下,因此,测量数据只能被理解为多次事件的统计结果。 考虑到源和探测器的内在噪声,我们通过薛定谔猫和贝尔实验的示例说明,一旦在单个粒子层面上放弃玻恩规则,现实性、局域性和因果性就会得到恢复。 我们得出结论,不可区分性和长时间检测过程使量子物理并非根本上的概率性。

We argue that measurement data in quantum physics can be rigorously interpreted only as a result of a statistical, macroscopic process, taking into account the indistinguishable character of identical particles. Quantum determinism is in principle possible on the condition that a fully-fledged quantum-field-theoretic model is used to describe the measurement device in interaction with the studied object as one system. In contrast, any approach that relies on Born's rule discriminates the dynamics of a quantum system from that of the detector with which it interacts during measurement. In this work, we critically analyze the validity of this measurement postulate applied to single-event signals. In fact, the concept of ``individual'' particle becomes inadequate once both indistinguishability and a scattering approach allowing an unlimited interaction time for an effective detection, are considered as they should be, hence preventing the separability of two successive measurement events. In this context, measurement data should therefore be understood only as a result of statistics over many events. Accounting for the intrinsic noise of the sources and the detectors, we also show with the illustrative cases of the Schr\"odinger cat and the Bell experiment that once the Born rule is abandoned on the level of a single particle, realism, locality and causality are restored. We conclude that indiscernibility and long-time detection process make quantum physics not fundamentally probabilistic.

[7] arXiv:2409.18495 (替换) [中文pdf, pdf, html, 其他]
标题: 纠缠的分离
标题: Separation out of Entanglement
Toru Ohira
评论: 提交发表,版本2:更正一些技术错误:版本3。包括从不同角度撰写标题的整体更改;版本4。修正了拼写错误和术语以提高清晰度;版本5。替换了图1,并相应地修改了文本
主题: 一般物理 (physics.gen-ph)

我们研究由扩展的Werner密度矩阵描述的量子态的可分性性质,其中经典部分表现出统计依赖性。 通过将经典部分推广以允许相关性,我们证明在特定参数范围内,与具有独立经典部分的标准Werner态相比,可分区域有所扩大。 这一结果表明,增加经典相关性可以增强整体量子态的可分性,为经典和量子相关性之间的相互作用提供了新的见解。

We investigate the separability properties of quantum states described by an extended Werner density matrix, where the classical component exhibits statistical dependence. By generalizing the classical part to allow correlations, we demonstrate that within a specific parameter range the separable region expands compared to the standard Werner state with an independent classical component. This result suggests that increasing classical correlation can enhance the separability of the overall quantum state, providing new insights into the interplay between classical and quantum correlations.

总共 7 条目
显示最多 2000 每页条目: 较少 | 更多 | 所有
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