论文标题
Lifshitz政权及其实验信号
The Lifshitz Regime and its Experimental Signals
论文作者
论文摘要
我们讨论了LIFSHITZ制度的可能性，其中戈德石玻色子和相关场的分散关系在非零矩时具有最低限度。对功能重新归一化组的研究表明，这发生在温度和重型化学电位的宽区域。相反，FRG发现来自临界终点波动的区域很小。我们建议这是由于手性限制中三级区域的狭窄。即使在热平衡中产生颗粒，在动量中是非单调的分散关系也会产生似乎非热行为。
We discuss the possibility of a Lifshitz regime, where the dispersion relation for Goldstone bosons and related fields has a minimum at nonzero momenta. Studies with the Functional Renormalization Group suggest that this occurs over a wide region in the plane of temperature and baryon chemical potential. Conversely, the FRG finds that the region in which fluctuations from a critical endpoint are significant is rather small. We suggest that this is due generically to the narrowness of the tricritical region in the chiral limit. Even if particles are produced in thermal equilibrium, a dispersion relation which is non-monotonic in momenta produces what appears to be non-thermal behavior.
