Loop quantum gravity, as this rival is known, was dreamed up in 1986 by Abhay Ashtekar, of Pennsylvania State University.

这个超弦理论的对头叫做“环圈量子重力学”，于1986年由宾西法尼亚州立大学的Abhay a shtekar提出。

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Loop quantum gravity, as this rival is known, was dreamed up in 1986 by Abhay Ashtekar, of Pennsylvania State University.

ECONOMIST: A new ��theory of everything�� is gaining ground