Spacetime and dark matter from spontaneous breaking of Lorentz symmetry

被引：22

作者：

Zlosnik, Tom ^{[1
]}

Urban, Federico ^{[1
]}

Marzola, Luca ^{[2
]}

Koivisto, Tomi ^{[2
,3
,4
]}

机构：

[1] Czech Acad Sci, Inst Phys, CEICO, Slovance 1999-2, Prague 18221, Czech Republic

[2] NICPB, Ravala Pst 10, EE-10143 Tallinn, Estonia

[3] KTH Royal Inst Technol, Nordita, Roslagstullsbacken 23, S-10691 Stockholm, Sweden

[4] Stockholm Univ, Roslagstullsbacken 23, S-10691 Stockholm, Sweden

来源：

CLASSICAL AND QUANTUM GRAVITY | 2018年 / 35卷 / 23期

基金：

欧洲研究理事会;

关键词：

gravitation; dark matter; cosmology; VARIABLES; GRAVITY;

D O I：

10.1088/1361-6382/aaea96

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is shown that a spontaneously-broken gauge theory of the Lorentz group contains Ashtekar's chiral formulation of general relativity accompanied by dust. From this perspective, gravity is described entirely by a connection omega valued in the Lie algebra of the complexified Lorentz group and a Lorentz-charged scalar field tau. The model is 'pre-geometric' in the sense that the spacetime metric may be constructed only in the symmetry-broken regime. We speculate on the extent to which this dust may account for dark matter and on the behaviour of the theory in regimes where the symmetry is not broken.

引用

页数：10

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