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arXiv 2209.11565hep-th
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外手征物质超场中的超粒子

Superparticle in an external chiral matter superfield

Yu. A. Markov, M. A. Markova, A. I. Bondarenko, N. Yu. Markov

摘要:

本文提出了超粒子与外手征超场$Φ(x,θ,\barθ)$相互作用的拉氏量,它对整体超对称性是不变的。超粒子的运动学定义在由超空间坐标$(x_μ,θ_α,\barθ_α)$描述的扩展超空间中,其中$x_μ$是纯玻色子坐标,$μ=0,\ldots,3$ ; $θ_α$和$\barθ_α$是额外的费米子格拉斯曼值旋量。为了构造超矢量$A_μ(x,θ,\barθ)$和超旋量$A_α(x,θ,\barθ)$的手征Lagrangian类似物,引入了$\bar{A}_{\dotα}(x,θ,\barθ)$规范场,它们也是色空间中的矩阵.本文所考虑的问题是进一步导出自旋色荷粒子在外费米子物质场中运动的动力学方程。这些运动方程是非常重要的,例如,当考虑到热夸克-胶子等离子体(QGP)中由热涨落引起的费米背景场对穿过QGP的硬色带电部分子动力学的影响时。反过来,这个问题的解决将使我们有可能,至少在定性的水平上,推进对像弦这样复杂的物理对象在外部费米子物质场中的运动的研究。

英文摘要:

In this paper the interaction Lagrangian of a superparticle with an external chiral superfield $Φ(x,θ,\barθ)$,invariant with respect to the global supersymmetry, is proposed. The kinematics of the superparticle is defined in an extended superspace described by superspace coordinates $(x_μ,θ_α,\barθ_α)$, where $x_μ$ are pure bosonic coordinates, $μ=0,\ldots,3$; $θ_α$ and $\barθ_α$ are additional fermionic Grassmann-valued spinors. With the purpose of the construction of the required Lagrangian, chiral analogues of the supervector $A_μ(x,θ,\barθ)$ and superspinor $A_α(x,θ,\barθ)$, $\bar{A}_{\dotα}(x,θ,\barθ)$ gauge fields are introduced, which are also matrices in color space. The problem considered in this paper is the further step in deriving the dynamical equations of motion for a spin color-charged particle moving in an external fermionic matter field. These equations of motion are of fundamental importance, for example, when taking into account the influence of fermionic background fields induced in a hot quark-gluon plasma (QGP) by thermal fluctuations on the dynamics of hard color-charged partons crossing the QGP. In turn, the solution of this problem will make it possible, at least at the qualitative level, to advance in the study of the motion in the external fermion matter field of such a complex physical object as a string.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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