中科院数学与系统科学研究院
数学研究所
学术报告
数学物理研讨班
报告人：马永革 教授（北京师范大学）
题 目：Loop quantum cosmology and emergent dark energy
时 间：2022年8月10日（周三）下午14 :00-15 :00
地 点：腾讯会议 299-120-074
摘 要：In this talk I will review the dynamics of loop quantum cosmology. Much attention will be paid on the construction of the Hamiltonian which is closely related to that in the full theory of loop quantum gravity. A one-parameter regularization freedom of the Hamiltonian constraint will also be introduced. For positive value of the regularization parameter, the effective Hamiltonian leads to an asymptotic de-Sitter branch of the Universe connecting to the standard Friedmann branch by the quantum bounce. By suitably choosing the value of the regularization parameter, the observational cosmological constant can emerge at large volume limit from the effect of quantum gravity, and the effective Newtonian constant satisfies the experimental restrictions in the meantime.
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