标题： 三维时空中的爱因斯坦-标量引力的新边界条件 显示英文标题

标题： New boundary conditions in Einstein-scalar gravity in three dimensions

摘要： 我们分析了一类标量场自相互作用对反作用的影响，这些相互作用有可能从AdS真空演化到标量场势能消失的固定点。 构造了在这些区域之间进行插值的精确解，范围从静态黑洞到动态时空。 它们的表面电荷是有限的但不可积的。 我们研究了这些电荷在解上的性质。 特别是，我们展示了电荷的可积部分通过Barnich和Troessaert提出的狄拉克括号的修改，实现了共形代数的表示。 后一种构造允许场依赖的中心扩张，其值在晚期趋向于Brown-Henneaux中心电荷。 显示英文摘要

摘要： We analyze the backreaction of a class of scalar field self-interactions with the possibility of evolving from an AdS vacuum to a fixed point where the scalar field potential vanishes. Exact solutions which interpolate between these regions, ranging from stationary black hole to dynamical spacetimes are constructed. Their surface charges are finite but non-integrable. We study the properties of these charges on the solutions. In particular, we show that the integrable part of the charges provides a realization of the conformal algebra by means of a modification of the Dirac bracket proposed by Barnich and Troessaert. The latter construction allows for a field dependent central extension, whose value tends to the Brown-Henneaux central charge at late times.