使用Möbius Domain Wall Fermions研究Hyper Stealth Dark Matter的有限温度相变
Finite Temperature Transition in Hyper Stealth Dark Matter using Möbius Domain Wall Fermions
AI总结：
代表LSD合作组，使用Möbius Domain wall fermions对单味SU(4)暗物质理论HSDM进行有限温度模拟，通过监测Polyakov loop等探究其一阶禁闭相变及其对费米子质量的依赖性，为早期宇宙引力波来源提供依据。
摘要：
强耦合复合暗物质理论的一阶禁闭相变可能为早期宇宙提供引力波来源。在此，代表Lattice Strong Dynamics (LSD)合作组，我们展示了对名为Hyper Stealth Dark Matter (HSDM)的单味SU(4)暗规范理论有限温度禁闭相变的最新研究。该理论中的暗物质候选者是一种复合玻色子重子，质量可低至几GeV。我们预期该有限温度相变在至少部分费米子质量范围内为一阶相变，并可能成为可观测引力辐射的来源。单味SU(4)的有限温度模拟采用Möbius Domain wall fermions进行。通过在$N_t=8$的三个格点体积下监测Polyakov loop、手征凝聚和拓扑荷，我们探究了相变阶数及其对费米子质量的依赖性。
英文摘要：
The first-order confinement transition of a strongly coupled composite dark matter theory can provide a possible source of gravitational waves in the early universe. In this work, on behalf of the Lattice Strong Dynamics (LSD) Collaboration, we present our recent investigation on the finite temperature confinement transition of the one-flavor SU(4) dark gauge theory named Hyper Stealth Dark Matter (HSDM). The dark matter candidate in this theory is a composite bosonic baryon and can have a remarkably low mass of a few GeV. We expect the finite temperature transition to be first-order over at least in some finite range of fermionic masses and to be a potential source of observable gravitational radiation. The finite temperature simulation of one-flavor SU(4) is done by using Möbius Domain wall fermions. The order of the transition and its fermionic mass dependence are explored by monitoring the Polyakov loop, chiral condensate and topological charge using three lattice volumes at $N_t=8$.
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