论文标题
Lorentz自发损坏的有效现场理论的阳性界限
Positivity bounds on effective field theories with spontaneously broken Lorentz invariance
论文作者
论文摘要
我们在自发破坏的理论中得出了EFT系数的阳性界限。我们采用了智障绿色的保守电流功能（或应力 - 能量张量）的分析特性，并假设该理论在紫外线中变为共形。该方法是一般的，并且适用于宇宙学和冷凝物质系统。作为一个具体的例子，我们查看了共形性超流体的eft，它描述了CFT的通用低能动力学在很大的化学势下，并且在NLO和NNLO上以三个维度的三个维度对操作员的系数产生了不平等。
We derive positivity bounds on EFT coefficients in theories where boosts are spontaneously broken. We employ the analytic properties of the retarded Green's function of conserved currents (or of the stress-energy tensor) and assume the theory becomes conformal in the UV. The method is general and applicable to both cosmology and condensed matter systems. As a concrete example, we look at the EFT of conformal superfluids which describes the universal low-energy dynamics of CFT's at large chemical potential and we derive inequalities on the coefficients of the operators, in three dimensions, at NLO and NNLO.
