Spin foam models of quantum gravity

被引：0
|
作者：
Mikovic, A [1 ]
机构：
[1] Univ Lusofona Humanidades & Tecnol, Dept Matemat & Ciencias Computacao, P-1749024 Lisbon, Portugal
来源：
MATHEMATICAL, THEORETICAL AND PHENOMENOLOGICAL CHALLENGES BEYOND THE STANDARD MODEL: PERSPECTIVES OF THE BALKAN COLLABORATIONS | 2005年
关键词：
D O I：
10.1142/9789812702166_0007
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We give a short review of the spin foam models of quantum gravity, with an emphasis on the Barret-Crane model. After explaining the shortcomings of the Barret-Crane model, we briefly discuss two new approaches, one based on the 3d spin foam state sum invariants for the embedded spin networks, and the other based on representing the string scattering amplitudes as 2d spin foam state sum invariants.
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页码：88 / 93
页数：6
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