论文标题
De Sitter磁性黑洞偶极子，具有超对称地平线
De Sitter magnetic black hole dipole with a supersymmetric horizon
论文作者
论文摘要
我们在$ n = 2 $ $ d = 4 $测量的超级加盖与$ u（1）$ gauge字段和物质中找到了新的非BPS解决方案。它由一个封闭的宇宙组成，两个极端的黑色孔相等，围绕两个奇异性。它们具有相反的磁性电荷（也没有电荷），但由于宇宙常数的正压，它们保持静态平衡。在黑洞的交换和电荷迹象的翻转下，几何形状完全对称。但是，标量场是非恒定和非对称的，在地平线上具有不同的值，这取决于实际模量。在一个地平线上，解决方案变为$ \ frac 12 $ -bps超对称，而在另一个则没有超对称性，但熵仍然独立于标量模量。
We find a new non BPS solution in $N=2$ $D=4$ gauged supergravity coupled to $U(1)$ gauge fields and matter. It consists in a closed universe with two extremal black holes of equal size, surrounding two singularities. They have opposite magnetic charges (and no electric charges), but stay in static equilibrium thanks to the positive pressure of a cosmological constant. The geometry is perfectly symmetric under the exchange of the black holes and the flip of the sign of the charges. However the scalar field is non constant and non symmetric, with different values at the horizons, which depend on a real modulus. At one of the horizon the solution becomes $\frac 12$-BPS supersymmetric, while at the other one there is no supersymmetry, but the entropy remains independent from the scalar modulus.
