Emergent de Sitter Cosmology from Decaying Anti-de Sitter Space

被引：69

作者：

Banerjee, Souvik ^{[1
]}

Danielsson, Ulf ^{[1
]}

Dibitetto, Giuseppe ^{[1
]}

Giri, Suvendu ^{[1
]}

Schillo, Marjorie ^{[1
]}

机构：

[1] Uppsala Univ, Inst Fysik & Astron, Box 803, SE-75108 Uppsala, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2018年 / 121卷 / 26期

基金：

瑞典研究理事会;

关键词：

SUPERGRAVITY; GRAVITY; COMPACTIFICATION;

D O I：

10.1103/PhysRevLett.121.261301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Recent developments in string compactifications demonstrate obstructions to the simplest constructions of low energy cosmologies with positive vacuum energy. The existence of obstacles to creating scale-separated de Sitter solutions indicates a UV/IR puzzle for embedding cosmological vacua in a unitary theory of quantum gravity. Motivated by this puzzle, we propose an embedding of positive energy Friedmann-Lemaitre-Robertson-Walker cosmology within string theory. Our proposal involves confining 4D gravity on a brane which mediates the decay from a nonsupersymmetric five-dimensional anti-de Sitter false vacuum to a true vacuum. In this way, it is natural for a 4D observer to experience an effective positive cosmological constant coupled to matter and radiation, avoiding the need for scale separation or a fundamental de Sitter vacuum.

引用

页数：6

共 46 条

[1] On the cosmological implications of the string Swampland [J].

Agrawal, Prateek ;

Obied, Georges ;

Steinhardt, Paul J. ;

Vafa, Cumrun .

PHYSICS LETTERS B, 2018, 784 :271-276

[2] The Landscape, the Swampland and the Era of Precision Cosmology [J].

Akrami, Yashar ;

Kallosh, Renata ;

Linde, Andrei ;

Vardanyan, Valeri .

FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS, 2019, 67 (1-2)

[3] On the de Sitter swampland criterion [J].

Andriot, David .

PHYSICS LETTERS B, 2018, 785 :570-573

[4]

[Anonymous], ARXIV180808971

[5] A stress tensor for anti-de Sitter gravity [J].

Balasubramanian, V ;

Kraus, P .

COMMUNICATIONS IN MATHEMATICAL PHYSICS, 1999, 208 (02) :413-428

[6] Quantization of four-form fluxes and dynamical neutralization of the cosmological constant [J].

Bousso, R ;

Polchinski, J .

JOURNAL OF HIGH ENERGY PHYSICS, 2000, (06) :1-25

[7] General brane cosmologies and their global spacetime structure [J].

Bowcock, P ;

Charmousis, C ;

Gregory, R .

CLASSICAL AND QUANTUM GRAVITY, 2000, 17 (22) :4745-4763

[8] Dissipative force on an external quark in heavy quark cloud [J].

Chakrabortty, Shankhadeep .

PHYSICS LETTERS B, 2011, 705 (03) :244-250

[9] Brane-world black holes [J].

Chamblin, A ;

Hawking, SW ;

Reall, HS .

PHYSICAL REVIEW D, 2000, 61 (06)

[10] Brane cosmologies without orbifolds [J].

Collins, H ;

Holdom, B .

PHYSICAL REVIEW D, 2000, 62 (10) :1-7

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