论文标题
3+1标准模型延伸重力部门的配方
3+1 Formulation of the Standard-Model Extension Gravity Sector
论文作者
论文摘要
我们提出了一个有效现场理论框架的3+1公式，称为引力部门中的标准模型扩展。采用了明确的局部洛伦兹和差异对称性破坏假设，我们进行了狄拉克 - 哈米尔顿分析。我们表明，动力学的结构与一般相对论和其他修饰的重力模型有显着差异。我们探索汉密尔顿的方程式，以了解系数的一些特殊选择。我们的主要应用是宇宙学，我们为这种情况提供了修改后的弗里德曼方程。结果显示了对标准宇宙学的一些有趣的修改。此外，我们将结果与现有框架和模型进行了比较，并评论对引力理论和现象学的其他领域的潜在影响。
We present a 3+1 formulation of the effective field theory framework called the Standard-Model Extension in the gravitational sector. The explicit local Lorentz and diffeomorphism symmetry breaking assumption is adopted and we perform a Dirac-Hamiltonian analysis. We show that the structure of the dynamics presents significant differences from General Relativity and other modified gravity models. We explore Hamilton's equations for some special choices of the coefficients. Our main application is cosmology and we present the modified Friedmann equations for this case. The results show some intriguing modifications to standard cosmology. In addition, we compare our results to existing frameworks and models and we comment on the potential impact to other areas of gravitational theory and phenomenology.
