Dyon Solution in Einstein-Yang-Mills Theory on a Cylindrical Symmetric Space Time with Cosmological Constant

Are There BPS Dyons in The Generalized $SU(2)$ Yang-Mills-Higgs Model?

We use the well-known Bogomolny's equations, in general coordinate system, for BPS monopoles and dyons in the $SU(2)$ Yang-Mills-Higgs model to obtain an explicit form of BPS Lagrangian density under the BPS Lagrangian method. We then generalize this BPS Lagrangian density and use it to derive several possible generalized Bogomolny's equations, with(out) additional constraint equations, for BPS monopoles and dyons in the generalized $SU(2)$ Yang-Mills-Higgs model. We also compute the stress-energy-momentum tensor of the generalized model, and argue that the BPS monopole and dyon solutions are …

Yang-Mills Solutions and Dyons on Cylinders over Coset Spaces with Sasakian Structure

We present solutions of the Yang-Mills equation on cylinders $\mathbb R\times G/H$ over coset spaces with Sasakian structure and odd dimension $2m+1$. The gauge potential is assumed to be $SU(m)$-equivariant, parametrized by two real, scalar-valued functions. Yang-Mills theory with torsion in this setup reduces to the Newtonian mechanics of a point particle moving in $\mathbb R^2$ under the influence of an inverted potential. We analyze the critical points of this potential and present an analytic as well as several numerical finite-action solutions. Apart from the Yang-Mills solutions that co…

Yang-Mills instantons and dyons on homogeneous G_2-manifolds

We consider Lie G-valued Yang-Mills fields on the space R x G/H, where G/H is a compact nearly K"ahler six-dimensional homogeneous space, and the manifold R x G/H carries a G_2-structure. After imposing a general G-invariance condition, Yang-Mills theory with torsion on R x G/H is reduced to Newtonian mechanics of a particle moving in R^6, R^4 or R^2 under the influence of an inverted double-well-type potential for the cases G/H = SU(3)/U(1)xU(1), Sp(2)/Sp(1)xU(1) or G_2/SU(3), respectively. We analyze all critical points and present analytical and numerical kink- and bounce-type solutions, wh…

广义 $SU(2)$ Yang-Mills-Higgs 模型中含标量依赖耦合 $θ$ 项的 BPS 方程

On BPS Equations of Generalized $SU(2)$ Yang-Mills-Higgs Model with Scalars-Dependent Coupling $θ$-term

本研究通过 BPS 拉格朗日量方法，为含标量依赖耦合 $θ$ 项的广义 $SU(2)$ Yang-Mills-Higgs 模型推导出更一般的 Bogomolnyi 方程，揭示 BPS 磁单极子解由参数 $γ$ 刻画，而 $θ$ 项耦合仅影响双子电荷，与 Witten 结果一致。

New self-dual solutions of SU(2) Yang-Mills theory in Euclidean Schwarzschild space

We present a systematic study of spherically symmetric self-dual solutions of SU(2) Yang-Mills theory on Euclidean Schwarzschild space. All the previously known solutions are recovered and a new one-parameter family of instantons is obtained. The newly found solutions have continuous actions and interpolate between the classic Charap and Duff instantons. We examine the physical properties of this family and show that it consists of dyons of unit (magnetic and electric) charge.

通过代数张量环分解系统提取精确杨-米尔斯解

Systematic Extraction of Exact Yang-Mills Solutions via Algebraic Tensor Ring Decomposition

本文提出代数张量环分解框架，系统地将杨-米尔斯理论的非线性偏微分方程转化为可处理的微分代数系统，提取出三种不同类别的精确解，揭示了强耦合规范理论的经典解空间特征。