玻色子星与暗物质

A torsion-balance search for ultra low-mass bosonic dark matter

We used a stationary torsion balance with a beryllium-aluminum composition dipole to search for ultra low-mass bosonic dark matter coupled to baryon minus lepton number. We set 95% confidence limits on the coupling constant $g_{\rm B-L}$ for bosons with masses between $10^{-18}$ and $10^{-16}$ eV/$c^2$ with the best performance at $m_{\rm DM} = 8\times 10^{-18}$ eV/$c^2$ constraining $g_{B-L}(\hbar c)^{-1/2} < 1 \times 10^{-25}$. This provides a complimentary limit to equivalence-principle experiments that search for ultra low-mass bosons as force-mediating particles.

Effect of Scalar Boson on Fermionic Dark Star

The role of scalar boson exchange as a mediator of the fermionic dark particle interaction and the mass of dark particle on the bulk properties of fermionic dark stars including their moment of inertia and tidal deformability are studied. We have found that the role of the attractive nature of the scalar boson exchange and the fermionic dark particle mass can control the stiffness of the fermionic dark star equation of state. By increasing the strength of scalar boson coupling, the fermionic dark star becomes more compact. As a consequence, if scalar boson exchange contribution is included the…

玻色气体作为银河系暗物质晕

Bosonic gas as a Galactic Dark Matter Halo

我们详细研究了牛顿体系中自旋为零玻色子的引力束缚多态组态的性质。我们表明，这种配置的属性，特别是它们的稳定性，取决于粒子是如何分布在不同的状态，他们组成。数值技术被用来区分稳定和不稳定的解决方案，并确定最终的配置，他们朝着发展。多态平衡组态可以作为标量场暗物质组成的星系晕的模型，其旋转曲线比单态组态的情况下显得更真实。

膨胀宇宙中的玻色子混合与味真空：暗能量的一个可能候选者

Boson mixing and flavor vacuum in the expanding Universe: a possible candidate for the dark energy

本文在弯曲时空与 FLW 度规中研究玻色子混合的味真空，证明其能量–动量张量等效于理想流体，并在固定 de Sitter 背景下得到可趋近 -1 的状态方程，为暗能量提供可能来源。

星系晕与旋转玻色子暗物质

Galactic Halos and rotating bosonic dark matter

本文研究旋转玻色子暗物质晕作为星系暗物质候选者，分析Einstein-Klein-Gordon星和Proca星模型对星系旋转曲线的影响，提出其可解释矮星系和旋涡星系中轨道速度平坦化及物质缺失问题。

Stueckelberg Bosons as an Ultralight Dark Matter Candidate

In this letter, we propose a new model of fuzzy dark matter based on Stueckelberg theory. Dark matter is treated as a Bose-Einstein condensate of Stueckelberg particles and the resulting cosmological effects are analyzed. Fits are understood for the density and halo sizes of such particles and comparison with existing models is made. Certain attractive properties of the model are demonstrated and lines for future work are laid out.

玻色子暗物质与恒星的相互作用

Interaction between bosonic dark matter and stars

我们提供了一个详细的分析如何玻色子暗物质“凝聚物”与致密恒星的相互作用，显着延长最近的一封信的结果。我们主要研究质量为$m_B$的玻色子场，如轴子、类轴子和隐光子。自引力玻色子场一般形成“呼吸”构型，时空几何和场都振荡，并且可以相互作用并聚集在恒星的中心。我们构建恒星配置形成的完美流体和玻色子凝聚，并可能描述的后期阶段的暗物质吸积到恒星上，在暗物质丰富的环境。这些合成星的振荡频率是$f=2.5\times 10^{14}\,\left(m_{B}c^2/eV\right)\,{\rm Hz}$的倍数。使用微扰分析和数值相对论技术，我们表明，这些恒星是一般稳定的，我们提供的不稳定的标准。我们的研究结果还表明，暗物质核心的增长停止在接近拉塞卡极限。因此，我们消除了一个关于恒星吸积暗物质的神话：暗物质的吸积并不一定导致恒星的毁灭，也不一定会坍缩成黑洞。最后，我们认为，长寿命玻色子核心的恒星也可能在其他理论与有效的质量耦合，如（无质量）标量张量理论。

用引力波探测器寻找暗光子暗物质

Searching for Dark Photon Dark Matter with Gravitational Wave Detectors

如果暗物质起源于一个非常轻的规范玻色子的背景，这个规范玻色子可能会对引力波探测器中的测试质量施加力，导致具有由规范玻色子质量设定的特征频率的位移。我们概述了一种新的搜索策略来寻找这样的暗物质，并表明地面和未来的天基引力波探测器有能力在未探索的参数制度，使5 $σ$发现。

在热平衡中排除玻色子排斥暗物质

Ruling Out Bosonic Repulsive Dark Matter in Thermal Equilibrium

自相互作用暗物质（SIDM），特别是玻色子，被认为是替代冷暗物质（CDM）的有希望的候选者，因为它解决了与CDM相关的一些问题。在这里，我们排除了暗物质在热平衡中是排斥玻色子的可能性。我们发展了Goodman（2000）提出的模型，推导了有限温度下的状态方程。等温球晕模型表明玻色-爱因斯坦凝聚核周围的非简并的信封，与突然的密度下降标记的两个阶段之间的边界。将该特征与观测到的旋转曲线进行比较，约束了我们模型的DM粒子的相互作用强度，并且子弹状团测量约束了散射截面。这两者最终都可以被投射为对粒子质量的约束。我们发现，这两个约束不能同时满足任何现实的晕模型-因此，暗物质不能是一个排斥玻色子在热平衡。如果DM不处于热平衡，它可能是一个排斥玻色子，这仍然是一个开放的问题;这需要粒子的质量明显小于1毫伏。

Dark sector unifications: dark matter-phantom energy, dark matter -- constant $w$ dark energy, dark matter-dark energy-dark matter

The paper brings a novel approach to unification of dark matter and dark energy in terms of a cosmic fluid. A model is introduced in which the cosmic fluid speed of sound squared is defined as a function of its equation of state (EoS) parameter. It is shown how logarithmic part of this function results in dynamical regimes previously not observed in cosmic fluid models. It is shown that in a particular dynamical regime the model behaves as a unification of dark matter and phantom dark energy. Further, it is shown that the model may describe dark matter - dark energy unification in which dark e…

Probing Bosonic Stars with Atomic Clocks

Dark Matter could potentially manifest itself in the form of asymmetric dark stars. In this paper we entertain the possibility of probing such asymmetric bosonic dark matter stars by the use of atomic clocks. If the dark sector connects to the standard model sector via a Higgs or photon portal, the interior of boson stars that are in a Bose-Einstein condensate state can change the values of physical constants that control the timing of atomic clock devices. Dilute asymmetric dark matter boson stars passing through the Earth can induce frequency shifts that can be observed in separated Earth ba…

来自OJ287的与暗物质无关的超轻玻色子轨道衰变约束

Dark Matter-Independent Orbital Decay Bounds on Ultralight Bosons from OJ287

利用OJ287超大质量黑洞双星，首次设定了与暗物质无关的超轻玻色子质量动力学约束，并提出超辐射动力学可解决黑洞演化停滞问题并在引力波背景留下可测信号。