论文标题
对协方差的重力的批评
A Critique of Covariant Emergent Gravity
论文作者
论文摘要
我解决了相对论模型的制定中遇到的一些问题，这些模型涵盖了径向加速的现象学。我以分数动力学项和$ f（r）$ - 类型的重力来探索标量和矢量理论，要求能量密度从下方界定，并且不存在超光模式，但同时某些一致性限制与观察结果保持在一起。我确定其能量从下面没有的能量并为向量场模型和修改的重力理论制定了一些不可接受的陈述的配置。最后，我讨论了超流体的暗物质，作为位于CDM和改良重力之间的混合理论，在这种情况下也强调了一些困难，这似乎比其他人更可取。
I address some problems encountered in the formulation of relativistic models encompassing the MOND phenomenology of radial acceleration. I explore scalar and vector theories with fractional kinetic terms and $f(R)$-type gravity, demanding that the energy density be bounded from below and that superluminal modes be absent, but also that some consistency constraints with observational results hold. I identify configurations whose energy is unbounded from below and formulate some no-go statements for vector field models and modified gravity theories. Finally, I discuss superfluid dark matter as a hybrid theory lying between CDM and modified gravity, highlighting some difficulties present also in this case, which appears preferable to the others.
