论文标题
Braneworlds对广告大量的量子真空效应
Quantum vacuum effects in braneworlds on AdS bulk
论文作者
论文摘要
我们回顾了在ADS时空背景下对量子真空局部特性的影响的研究结果。考虑了两个几何形状：平行于ADS边界的Brane和一个与ADS边界相交的Brane。对于这两种情况，能量弹药张量的真空期望值（VEV）的贡献是明确分离的，并且研究了参数的各种渐近区域的行为。结果表明，重力场对量子真空的局部特性的影响在距离大于AD曲率半径的距离时至关重要。在具有平行于ADS边界的Brane的几何形状中，对于具有Robin边界条件的标量场，可以考虑使用Bag边界条件和电磁场的Dirac Field的标量场。在后一种情况下，讨论了两种类型的边界条件。第一个是对完美导体边界条件的概括，第二个是对应于gcd中使用的限制边界条件。对于与ADS边界相交的Brane的几何形状，考虑了标量场的情况。除对角线成分外，相应的能量量张量具有非零的非对抗分量。由于后者，除了正常成分外，Casimir力还获得了与Brane平行的分量。
We review the results of investigations for brane-induced effects on the local properties of quantum vacuum in background of AdS spacetime. Two geometries are considered: a brane parallel to the AdS boundary and a brane intersecting the AdS boundary. For both these cases the contribution in the vacuum expectation value (VEV) of the energy-momentum tensor is separated explicitly and its behavior in various asymptotic regions of the parameters is studied. It is shown that the influence of the gravitational field on the local properties of the quantum vacuum is essential at distance from the brane larger than the AdS curvature radius. In the geometry with a brane parallel to the AdS boundary the VEV of the energy-momentum tensor is considered for scalar field with the Robin boundary condition, for Dirac field with the bag boundary condition and for the electromagnetic field. In the latter case two types of boundary conditions are discussed. The first one is a generalization of the perfect conductor boundary condition and the second one corresponds to the confining boundary condition used in QCD for gluons. For the geometry of a brane intersecting the AdS boundary, the case of a scalar field is considered. The corresponding energy-momentum tensor, apart from the diagonal components, has nonzero off-diagonal component. As a consequence of the latter, in addition to the normal component, the Casimir force acquires a component parallel to the brane.
