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Effect of anomalous HHH coupling on the decay H → Z Z* → 4 charged leptons 异常HHH耦合对H→Z Z*→4带电轻子衰变的影响
IF 4.4 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-18 DOI: 10.1016/j.physletb.2026.140176
Pankaj Agrawal, Biswajit Das
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引用次数: 0
Charged axially symmetric exponential metric: Exact solutions to the Einstein-Maxwell equations 荷电轴对称指数度量:爱因斯坦-麦克斯韦方程组的精确解
IF 4.5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-17 DOI: 10.1016/j.physletb.2026.140186
S. Habib Mazharimousavi
We construct and analyze charged and magnetized extensions of the axially symmetric exponential metric, that is known as the Curzon-Chazy spacetime (CCS) within the Weyl class. Working within the Einstein-Maxwell framework, we first derive an exact charged axially symmetric exponential metric by directly solving the coupled field equations for a dyonic monopole configuration. The solution is shown to reduce smoothly to the vacuum CCS in the neutral limit and to the extremal Reissner-Nordström spacetime in a special parameter regime. We then rederive the same charged geometry using the Harrison transformation in the Ernst formalism, establishing the equivalence between the direct and solution-generating approaches. Subsequently, we apply the magnetic Harrison transformation to obtain a Melvin-type magnetized deformation of the spacetime. Finally, by implementing the Ehlers transformation, we generate a stationary but nonrotating swirling geometry endowed with a nonvanishing NUT charge, which we identify invariantly via the Komar dual mass. A further magnetic Harrison transformation yields a magnetized swirling (NUT-type) spacetime. These results demonstrate how electric, magnetic, and gravitomagnetic charges arise systematically from the CCS through exact solution-generating techniques.
我们构造并分析了轴对称指数度量的带电和磁化扩展,即Weyl类中的Curzon-Chazy时空(CCS)。在爱因斯坦-麦克斯韦框架下,我们首先通过直接求解一个动态单极子构型的耦合场方程,推导出一个精确的带电轴对称指数度量。结果表明,该解在中性极限下可平滑地降至真空CCS,在特殊参数区可平滑地降至时空极值Reissner-Nordström。然后,我们使用恩斯特形式主义中的哈里森变换重新推导相同的带电几何,建立直接和解生成方法之间的等价性。随后,我们应用磁哈里森变换获得了时空的梅尔文型磁化变形。最后,通过实施Ehlers变换,我们生成了一个静止但不旋转的旋涡几何,该几何具有不消失的NUT电荷,我们通过Komar对偶质量来确定其不变。进一步的磁哈里森变换产生磁化旋涡(nut型)时空。这些结果展示了电、磁和引力电荷是如何通过精确的解生成技术系统地从CCS产生的。
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引用次数: 0
Iterative Harrow-Hassidim-Lloyd quantum algorithm for solving resonances with eigenvector continuation 求解特征向量延拓共振的迭代Harrow-Hassidim-Lloyd量子算法
IF 4.5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-17 DOI: 10.1016/j.physletb.2026.140174
Hantao Zhang , Dong Bai , Zhongzhou Ren
We propose a novel quantum algorithm for solving nuclear resonances, which is based on the iterative Harrow-Hassidim-Lloyd algorithm and eigenvector continuation with complex scaling. To validate this approach, we compute the resonant states of αα system and achieve results in good agreement with traditional methods. Our study offers a new perspective on calculating eigenvalues of non-Hermitian operators and lays some groundwork for further exploration of nuclear resonances using quantum computing.
提出了一种基于迭代Harrow-Hassidim-Lloyd算法和复标度特征向量延拓的核共振求解量子算法。为了验证这一方法,我们计算了α - α系统的共振态,得到了与传统方法一致的结果。我们的研究为计算非厄米算子的特征值提供了一个新的视角,并为利用量子计算进一步探索核共振奠定了一些基础。
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引用次数: 0
Probing the shape evolution and shell structures in neutron-rich N=50 nuclei 富中子N=50核的形状演化和壳层结构探测
IF 4.4 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-17 DOI: 10.1016/j.physletb.2026.140184
Anil Kumar, Noritaka Shimizu, Takayuki Miyagi, Yusuke Tsunoda, Yutaka Utsuno
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引用次数: 0
Maximal GW amplitude from bubble collisions in supercooled phase transitions 过冷相变中气泡碰撞产生的最大GW振幅
IF 4.5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-16 DOI: 10.1016/j.physletb.2026.140157
Masaki Yamada
We extend analytic formulas for the gravitational-wave (GW) spectrum from first-order phase transitions to include cosmic expansion under the thin-wall and envelope approximations. We demonstrate that even for strongly supercooled transitions the GW amplitude is bounded from above. This conclusion is explicitly verified for several representative nucleation histories, including delta-function, power-law, and power-exponential types. Moreover, the spectral shape, amplitude, and peak frequency remain largely unaffected by the details of the nucleation rate once expressed in terms of the comformal variables evaluated at an appropriately defined characteristic collision time.
我们将引力波(GW)光谱的解析公式从一阶相变扩展到包括薄壁和包络近似下的宇宙膨胀。我们证明,即使对于强过冷跃迁,GW振幅也是有界的。这一结论明确地验证了几个代表性的成核历史,包括δ函数、幂律和幂指数类型。此外,光谱形状、振幅和峰值频率在很大程度上不受成核率细节的影响,一旦用在适当定义的特征碰撞时间评估的共形变量来表示。
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引用次数: 0
From black holes to wormholes via minimal geometric deformation in rastall theory 从黑洞到虫洞的最小几何变形理论
IF 4.5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-15 DOI: 10.1016/j.physletb.2026.140171
Malick Sallah , Eman M. Moneer , M. Sharif , Euaggelos E. Zotos
In this work, we investigate the construction of wormhole solutions within the framework of Rastall gravity by employing the minimal gravitational decoupling approach. We begin by formulating the modified field equations of Rastall theory. Utilizing this scheme, we decouple these equations and construct a minimally deformed Schwarzschild black hole solution. This deformed black hole is then linked to a wormhole geometry, and the resulting configuration is analyzed in detail. We examine key physical and geometrical properties of the wormhole, including the violation of the null energy conditions, the behavior of the active gravitational mass, the volume integral quantifier, and the embedding diagram. Our analysis reveals that the wormhole throat emerges naturally in the deformed geometry and satisfies the necessary flare-out condition. The effective energy conditions are plotted for various values of the Rastall parameter, confirming the presence of exotic matter near the throat. The results demonstrate that the amount of exotic matter required to sustain the wormhole can be minimized through appropriate geometric configurations, thereby supporting the viability of traversable wormholes in Rastall gravity.
在这项工作中,我们利用最小引力解耦方法研究了在Rastall引力框架内虫洞解的构造。我们首先建立拉斯托理论的修正场方程。利用该格式,我们解耦了这些方程并构造了最小变形史瓦西黑洞解。然后将这个变形的黑洞与虫洞的几何结构联系起来,并详细分析由此产生的结构。我们研究了虫洞的关键物理和几何性质,包括对零能条件的违反、主动引力质量的行为、体积积分量词和嵌入图。我们的分析表明,虫洞喉在变形几何中自然出现,并满足必要的爆发条件。绘制了不同拉斯托参数值的有效能量条件,证实了喉部附近存在外来物质。结果表明,维持虫洞所需的外来物质的数量可以通过适当的几何配置最小化,从而支持可穿越虫洞在Rastall重力下的可行性。
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引用次数: 0
Reducing hadronic uncertainty in low-energy neutral-current processes 降低低能中性电流过程中的强子不确定性
IF 4.5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-15 DOI: 10.1016/j.physletb.2026.140181
Oleksandr Tomalak
We analyze the hadronic uncertainty from light-quark loops coupled to (anti)neutrino in low-energy neutral-current (anti)neutrino scattering, estimated at the 0.30.4% level. This uncertainty arises from limited knowledge of the charge-isospin correlation function of quark currents. We study the charge-charge and charge-isospin correlators within SU(2) and SU(3) chiral perturbation theory (ChPT). In SU(2) ChPT, the two correlators are identical to all orders in the chiral and electromagnetic expansions. We further perform a leading-order SU(3) ChPT calculation and discuss the relevant counterterms. Our findings reduce the hadronic uncertainty in neutral-current processes such as (anti)neutrino-electron and coherent elastic (anti)neutrino-nucleus scattering by a factor  ∼ 35.
我们分析了在低能中性电流(反)中微子散射中耦合到(反)中微子的光夸克环的强子不确定性,估计在0.3 - 0.4%的水平。这种不确定性源于对夸克电流的电荷-同位旋相关函数的有限认识。研究了SU(2)和SU(3)手性微扰理论中的电荷-电荷和电荷-同位旋相关子。在SU(2) ChPT中,这两个相关器在手性和电磁展开中的所有阶数都是相同的。我们进一步进行了一阶SU(3) ChPT计算,并讨论了相关反项。我们的发现降低了中性电流过程中的强子不确定性,例如(反)中微子电子和相干弹性(反)中微子核散射 ~ 35。
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引用次数: 0
High reheating temperature without axion domain walls 再加热温度高,无轴子畴壁
IF 4.5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-15 DOI: 10.1016/j.physletb.2026.140177
Shota Nakagawa , Yuichiro Nakai , Yu-Cheng Qiu , Lingyun Wang , Yaoduo Wang
We investigate a cosmological scenario in which the Peccei-Quinn (PQ) symmetry remains broken in the entire history of the Universe, thereby avoiding the formation of axion strings and domain walls. Contrary to the conventional expectation, it is demonstrated that appropriately chosen scalar interactions are able to keep the PQ symmetry broken at arbitrarily high temperatures. We carefully examine the finite-temperature effective potential in a model with two PQ breaking scalar fields. The existence of flat directions plays a vital role in suppressing axion isocurvature perturbations during inflation by stabilizing a PQ field at a large field value. The viable parameter space consistent with theoretical and observational constraints is identified. Our scenario provides a minimal path for PQ symmetry breaking that addresses both the axion domain wall and isocurvature problems while permitting arbitrarily high reheating temperatures accommodating high-scale baryogenesis scenarios such as thermal leptogenesis.
我们研究了Peccei-Quinn (PQ)对称在整个宇宙历史中保持破缺的宇宙学情景,从而避免了轴子弦和畴壁的形成。与传统的预期相反,证明了适当选择的标量相互作用能够在任意高温下保持PQ对称性的破缺。我们仔细研究了具有两个PQ破缺标量场的模型的有限温度有效势。平坦方向的存在对抑制膨胀过程中轴子等曲率扰动起到了至关重要的作用,使PQ场稳定在一个大场值。确定了符合理论约束和观测约束的可行参数空间。我们的方案提供了PQ对称破缺的最小路径,解决了轴子畴壁和等曲率问题,同时允许任意高的再加热温度,以适应高规模的重子发生场景,如热轻生。
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引用次数: 0
From MOND entropy to extended uncertainty principles: A unified framework 从MOND熵到扩展的不确定性原理:一个统一的框架
IF 4.5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-15 DOI: 10.1016/j.physletb.2026.140169
Özgür Sevinç , Özgür Ökcü , Ekrem Aydiner
In this study, we explore the relation between generalised entropies and the extended uncertainty principle (EUP) models. Starting from the higher-order extended uncertainty principle (HOEUP), we obtain the modified entropy-area relation. Then, we derive the modified Friedmann equations through three different approaches: the first law of thermodynamics at the apparent horizon, the entropic gravity case, and the emergence of cosmic space. Furthermore, we check the validity of the generalised second law (GSL). Notably, HOEUP modified Friedmann equations are the limiting cases of those obtained from a recently proposed novel entropy, which is derived from Modified Newtonian Dynamics (MOND) [Phys. Dark Universe 49 (2025) 101967]. Motivated by this connection, we derive a novel EUP, referred to as MOND EUP, from a reverse procedure. This novel EUP reproduces to EUP relations associated with Rényi and dual Kaniadakis entropies in the limiting cases. Moreover, we show that HOEUP corresponds to perturbative limit of MOND entropy. The main new result of this paper is a reverse procedure beginning from a recently proposed novel MOND entropy to construct a unified EUP. This reverse procedure is not limited with the present case. In principle, the method can be applied to other generalised entropy formalisms, suggesting that our findings may establish a unified framework that bridges the generalised entropies, cutoff mechanisms, and EUP models. In particular, the corresponding modified uncertainty principles may have effective cutoff mechanisms for the entropy forms, which do not explicitly display cutoff mechanisms. Thus, these entropies may have cutoff mechanism due to their corresponding modified uncertainty principles.
本文探讨了广义熵与扩展不确定性原理(EUP)模型之间的关系。从高阶扩展不确定性原理(HOEUP)出发,得到了修正的熵-面积关系。然后,我们通过三种不同的方法推导修正的弗里德曼方程:视界处的热力学第一定律、熵引力情况和宇宙空间的出现。进一步,我们验证了广义第二定律(GSL)的有效性。值得注意的是,HOEUP修正的弗里德曼方程是最近提出的一种新熵的极限情况,该熵来源于修正牛顿动力学(MOND)[物理学]。黑暗宇宙49(2025)101967]。在这种联系的激励下,我们从一个相反的过程中推导出一个新的EUP,称为MOND EUP。在极限情况下,本文再现了与r尼达奇熵和双卡尼达基斯熵相关的EUP关系。此外,我们还证明了HOEUP对应于MOND熵的微扰极限。本文的主要新结果是从最近提出的新的MOND熵开始的反向过程来构建统一的EUP。这种相反的程序并不限于本案例。原则上,该方法可以应用于其他广义熵形式,这表明我们的发现可以建立一个统一的框架,将广义熵、截止机制和EUP模型连接起来。特别是,相应的修正不确定性原理可能对熵形式具有有效的截止机制,而熵形式没有明确地显示截止机制。因此,这些熵可能由于其相应的修正的不确定性原理而具有截止机制。
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引用次数: 0
Limits on new strongly interacting matter from measurements of Transverse Energy-Energy Correlations at s=13 TeV at the LHC 在大型强子对撞机s = 13 TeV下测量的横向能量-能量相关对新强相互作用物质的限制
IF 4.5 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS Pub Date : 2026-01-15 DOI: 10.1016/j.physletb.2026.140182
Javier Llorente, Eva Sánchez
This work establishes 95% confidence level limits to models incorporating additional fermions sensitive to the strong interaction. Precision measurements of Transverse Energy-Energy Correlations at the ATLAS experiment are used, exploiting their dependence on the strong coupling constant to analyse the effects of introducing new fermions with colour charge on the Renormalisation Group Equation. The comparison between theoretical predictions, corrected up to next-to-next-to-leading order, and the data collected by ATLAS at s=13 TeV allows to constrain physics models proposing the existence of new fermions with masses up to 4 TeV, independently of assumptions on the fermion decay.
这项工作为包含对强相互作用敏感的额外费米子的模型建立了95%的置信水平限制。在ATLAS实验中使用了横向能量-能量相关的精确测量,利用它们对强耦合常数的依赖来分析引入带色荷的新费米子对重整化群方程的影响。理论预测(修正到倒数第二至倒数第一阶)与ATLAS在s=13 TeV时收集的数据之间的比较,允许约束提出质量高达4 TeV的新费米子存在的物理模型,独立于费米子衰变的假设。
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引用次数: 0
期刊
Physics Letters B
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