Hartree approximation in curved spacetimes revisited. II. The semiclassical Einstein equations and de Sitter self-consistent solutions

被引：7

作者：

Lopez Nacir, Diana L. ^{[1
,2
,3
]}

Mazzitelli, Francisco D. ^{[4
]}

Trombetta, Leonardo G. ^{[2
,3
]}

机构：

[1] Abdus Salam Int Ctr Theoret Phys, I-34151 Trieste, Italy

[2] FCEyN UBA, Fac Ciencias Exactas & Nat, Dept Fis, RA-1428 Buenos Aires, DF, Argentina

[3] FCEyN UBA, Fac Ciencias Exactas & Nat, IFIBA, RA-1428 Buenos Aires, DF, Argentina

[4] Comis Nacl Energia Atom, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 08期

关键词：

INFLATIONARY UNIVERSE; QUANTUM-FIELDS; COSMOLOGY; FLATNESS; HORIZON;

D O I：

10.1103/PhysRevD.89.084013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the semiclassical Einstein equations (SEE) in the presence of a quantum scalar field with self-interaction lambda phi(4). Working in the Hartree truncation of the two-particle irreducible effective action, we compute the vacuum expectation value of the energy-momentum tensor of the scalar field, which acts as a source of the SEE. We obtain the renormalized SEE by implementing a consistent renormalization procedure. We apply our results to find self-consistent de Sitter solutions to the SEE in situations with or without spontaneous breaking of the Z(2)-symmetry.

引用

页数：17

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