Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität, Theresienstraße 37, 80333 Munich, Germany.
Phys Rev Lett. 2011 May 13;106(19):191102. doi: 10.1103/PhysRevLett.106.191102. Epub 2011 May 11.
Generic relevant deformations of Einstein's gravity theory contain additional degrees of freedom that have a multifaceted stabilization dynamics on curved spacetimes. We show that these relevant degrees of freedom are self-protected against unitarity violations by the formation of classical field lumps that eventually merge to a new background geometry. The transition is heralded by the massive decay of the original vacuum and evolves through a strong coupling regime. This process fits in the recently proposed classicalization mechanism and extends it further to free field dynamics on curved backgrounds.
爱因斯坦引力理论的广义相关变形包含额外的自由度，这些自由度在弯曲时空中具有多方面的稳定动力学。我们表明，这些相关自由度通过形成经典场团而免受单位破坏的自我保护，这些经典场团最终合并到一个新的背景几何中。这种转变由原始真空的大量衰减预示，并通过强耦合状态进行演化。这个过程符合最近提出的经典化机制，并将其进一步扩展到弯曲背景下的自由场动力学。
