论文标题
通货膨胀后的暗物质Bremsstrahlung
Post-Inflationary Dark Matter Bremsstrahlung
论文作者
论文摘要
暗物质可能只能在高于Entraton质量的能量尺度上有效地与可见扇区相互作用，例如Planck量表或大统一量表。在这种情况下，暗物质主要是在加热期间以平衡产生的，通常称为紫外线冻结。我们评估了来自Intrahon衰减产品中Bremsstrahlung产生的暗物质的丰富度，假设没有直接耦合到达充气和暗物质。这个过程通常主导着低温温度的暗物质产生，在这些温度下，通过热等离子体中粒子的灭绝产生的生产效率低下。我们发现，Bremsstrahung的过程主要用于重新加热温度$ t _ {\ Mathrm {rh}} \ Lessim 10^{10} $ GEV，并为UV Scale $ \ simeq 10^{16} $ GEV产生深色物质的必要密度。作为示例，我们通过重力和Dimension-6矢量门户有效相互作用以数值来计算暗物质Bremsstrahlung的产量。
Dark matter may only interact with the visible sector efficiently at energy scales above the inflaton mass, such as the Planck scale or the grand unification scale. In such a scenario, the dark matter is mainly produced out of equilibrium during the period of reheating, often referred to as UV freeze-in. We evaluate the abundance of the dark matter generated from bremsstrahlung off the inflaton decay products assuming no direct coupling between the inflaton and the dark matter. This process generally dominates the production of dark matter for low reheating temperatures where the production through the annihilations of particle in the thermal plasma becomes inefficient. We find that the bremsstrahlung process dominates for reheating temperatures $T_{\mathrm{RH}} \lesssim 10^{10}$ GeV, and produces the requisite density of dark matter for a UV scale $\simeq 10^{16}$ GeV. As examples, we calculate numerically the yield of the dark matter bremsstrahlung through gravitation and dimension-6 vector portal effective interactions.
