论文标题
标量连接重力和自发标量
Scalar-Connection Gravity and Spontaneous Scalarization
论文作者
论文摘要
已知重力的标量调整理论可以通过各种天体物理现象与一般相对性造成显着偏差。在本文中，我们通过设置标量和连接配置而不是度量来制定标量连接重力。由于没有度量的物质行业并不直接构想，因此我们从不变动作的体积元素中的一式速度来调用宇宙学流体。这导致具有完美流体源和产生的度量的引力方程，预计这会产生与强场权方案中一般相对论的合理偏差。作为一种相关应用，我们研究了自发的标量机制，并表明damour-esposito-farèse模型出现在某种类别的标量连接重力中。此外，我们研究了一项一般研究，其中目前的框架与著名的标量调整理论可以区分。
Scalar-tensor theories of gravity are known to allow significant deviations from general relativity through various astrophysical phenomena. In this paper, we formulate a scalar-connection gravity by setting up scalars and connection configurations instead of metric. Since the matter sector is not straightforward to conceive without a metric, we invoke cosmological fluids in terms of their one-form velocity in the volume element of the invariant action. This leads to gravitational equations with a perfect fluid source and a generated metric, which are expected to produce reasonable deviations from general relativity in the strong-field regime. As a relevant application, we study spontaneous scalarization mechanism and show that the Damour-Esposito-Farèse model arises in a certain class of scalar-connection gravity. Furthermore, we investigate a general study in which the present framework becomes distinguishable from the famed scalar-tensor theories.
