Path Integrals and Alternative Effective Dynamics in Loop Quantum Cosmology

• 作者: 秦立 邓果 马永革
• 来源期刊: 理论物理通讯：英文版
• 学科: 地球科学
• 关键词: 量子宇宙学 路径积分 替代品 圈量子引力 有效哈密顿 积分公式 方程推导 弗里德曼
• 年，卷（期）: 2012,（2）
• 页码范围: 326-332
• 页数: 7页
• 分类号: O413.1|P159.2
• 语种: 英文

摘要

The alternative dynamics of loop quantum cosmology is examined by the path integral formulation. We consider the spatially flat FRW models with a massless scalar field, where the alternative quantizations inherit more features from full loop quantum gravity. The path integrals can be formulated in both timeless and deparameterized frameworks. It turns out that the effective Hamiltonians derived from the two different viewpoints are equivalent to each other. Moreover, the first-order modified Friedmann equations are derived and predict quantum bounces for contracting universe, which coincide with those obtained in canonical theory.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	秦立		1	0	0.0	0.0
2	邓果		1	0	0.0	0.0
3	马永革		8	1	1.0	1.0