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arXiv 1601.00601hep-thgr-qc
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一个宇宙学常数的动力学相消与闵可夫斯基真空的研究

Dynamic cancellation of a cosmological constant and approach to the Minkowski vacuum

F. R. Klinkhamer, G. E. Volovik

摘要:

重新考虑了用$q$理论解决宇宙学常数问题的方法.新的观察是,由于时空曲率产生量子力学粒子的反反应,有效的经典$q$理论得到了修改。此外,普朗克尺度宇宙学常数被添加到作用量密度的势项,以表示零点能量和相变的影响。空间平坦的Friedmann-Robertson-Walker宇宙的动力学方程,然后发现给一个稳定的方法闵可夫斯基真空,吸引子行为的初始边界条件的字段上的有限域。接近闵可夫斯基真空是缓慢的,并引起粒子视界的暴胀型增加。

英文摘要:

The $q$-theory approach to the cosmological constant problem is reconsidered. The new observation is that the effective classical $q$-theory gets modified due to the backreaction of quantum-mechanical particle production by spacetime curvature. Furthermore, a Planck-scale cosmological constant is added to the potential term of the action density, in order to represent the effects from zero-point energies and phase transitions. The resulting dynamical equations of a spatially-flat Friedmann-Robertson-Walker universe are then found to give a steady approach to the Minkowski vacuum, with attractor behavior for a finite domain of initial boundary conditions on the fields. The approach to the Minkowski vacuum is slow and gives rise to an inflation-type increase of the particle horizon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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