4d simplicial quantum gravity interacting with gauge matter fields

被引：40
|
作者：
Bilke, S [1 ]
Burda, Z
Krzywicki, A
Petersson, B
Tabaczek, J
Thorleifsson, G
机构：
[1] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany
[2] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland
[3] Univ Paris 11, LPTHE, CNRS, F-91405 Orsay, France
来源：
PHYSICS LETTERS B | 1998年 / 418卷 / 3-4期
关键词：
D O I：
10.1016/S0370-2693(97)01409-3
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The effect of coupling non-compact fi(I) gauge fields to four dimensional simplicial quantum gravity is studied using strong coupling expansions and Monte Carlo simulations. For one gauge field the back-reaction of the matter on the geometry is weak. This changes, however, as more matter fields are introduced. For more than two gauge fields the degeneracy of random manifolds Into branched polymers does not occur. and the branched polymer phase seems to be replaced by a new phase with a negative string susceptibility exponent gamma and fractal dimension d(H) approximate to 4. (C) 1998 Elsevier Science B.V.
引用
收藏
页码：266 / 272
页数：7
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