论文标题
磁场和重力波从一阶相变
Magnetic field and gravitational waves from the first-order Phase Transition
论文作者
论文摘要
我们在一阶电子相变期间对磁场和重力波产物进行了三维晶格模拟。除了引力波，磁场强度的幂律频谱是第一次计算的，这是一个破损的幂律频谱：$b_ξ\ propto f^{0.91} $ $ f <f_ \ f_ \ f_ \ star $和$ b_ b_ b_ npopto f^{-1.65 $ limimimient for limimient for高频f imim f imim for的高频区域的$ f> limim f> limim f>频率为$ f_ \ star \ sim \ sim 5 $ hz在相变温度100 GEV处。当考虑流体动力学时，生成的磁场强度可以在相关长度下达到$b_ξ\ sim 10^{ - 7} $ g，$ξ\ sim 10^{ - 7} $ pc，它可能播种大型磁场。我们的研究表明，宇宙磁场强度和重力波的测量是补充，以探测新的物理学，以承认电子相变。
We perform the three dimensional lattice simulation of the magnetic field and gravitational wave productions from bubble collisions during the first-order electroweak phase transition. Except that of the gravitational wave, the power-law spectrum of the magnetic field strength is numerically calculated for the first time, which is of a broken power-law spectrum: $B_ξ\propto f^{0.91}$ for low frequency region of $f<f_\star$ and $B_ξ\propto f^{-1.65}$ for high frequency region of $f>f_\star$ in the thin-wall limit, with the peak frequency being $f_\star\sim 5$ Hz at the phase transition temperature 100 GeV. When the hydrodynamics is taken into account, the generated magnetic field strength can reach $B_ξ\sim 10^{-7}$G at a correlation length $ξ\sim 10^{-7}$pc, which may seed the large scale magnetic fields. Our study shows that the measurements of cosmic magnetic field strength and gravitational waves are complementary to probe new physics admitting electroweak phase transition.
