论文标题
大$ d $有效理论中的全息碰撞
Holographic collisions in large $D$ effective theory
论文作者
论文摘要
我们使用大型$ d $有效理论作为全息等离子体中高斯质量密度斑点的碰撞作为全息冲击波碰撞的模型。有效理论的简单性使我们能够在爱因斯坦 - 马克斯韦（Einstein-Maxwell）理论中执行前4+1个碰撞，这对于与非零baryonic数量的物质碰撞是双重的。我们探索几种具有不同斑点形状，冲击参数和电荷值的碰撞方案，发现斑点的横向宽度低于斑点的碰撞在重新上等效。我们还观察到电荷会弱影响其余数量。最后，我们通过电荷扩散和粘性耗散研究在碰撞过程中产生的熵。确定了线性熵增长的多个阶段，其速率并非独立于初始条件。
We study collisions of Gaussian mass-density blobs in a holographic plasma, using a large $D$ effective theory, as a model for holographic shockwave collisions. The simplicity of the effective theory allows us to perform the first 4+1 collisions in Einstein-Maxwell theory, which are dual to collisions of matter with non-zero baryonic number. We explore several collision scenarios with different blob shapes, impact parameters and charge values and find that collisions with impact parameter below the transverse width of the blobs are equivalent under rescaling. We also observe that charge weakly affects the rest of quantities. Finally, we study the entropy generated during collisions, both by charge diffusion and viscous dissipation. Multiple stages of linear entropy growth are identified, whose rates are not independent of the initial conditions.
