Trans-planckian wimpzillas

被引：36

作者：

Kolb, Edward W. ^{[1
]}

Starobinsky, A. A.

Tkachev, I. I.

机构：

[1] Univ Chicago, Enrico Fermi Inst, Dept Astron & Astrophys, Chicago, IL 60637 USA

[2] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[3] Landau Inst Theoret Phys, Moscow 119334, Russia

[4] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2007年 / 07期

关键词：

trans-Planckian physics; dark matter; inflation;

D O I：

10.1088/1475-7516/2007/07/005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Two previously proposed conjectures-gravitational trans-Planckian particle creation in the expanding universe, and the existence of ultraheavy stable particles with masses up to the Planck scale (wimpzillas)-are combined in a proposal for trans-Planckian particle creation of wimpzillas. This new scenario leads to a huge enhancement in their production compared to mechanisms put forward earlier. As a result, it requires the trans-Planckian particle creation parameter to be rather small to avoid overproduction of such particles, much less than that required for observable effects in the primordial perturbation spectrum. This ensures also that wimpzillas are mainly created at the end of primordial in. flation. Conditions under which trans-Planckian wimpzillas can constitute the present dark matter are determined.

引用

页数：12

共 53 条

[1] Short distance and initial state effects in inflation:: Stress tensor and decoherence -: art. no. 043515 [J].

Anderson, PR ;

Molina-París, C ;

Mottola, E .

PHYSICAL REVIEW D, 2005, 72 (04) :1-38

[2]

Armendáriz-Picón C, 2003, J COSMOL ASTROPART P

[3] Why should primordial perturbations be in a vacuum state? [J].

Armendariz-Picon, C. .

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2007, (02)

[4] SPONTANEOUS CREATION OF ALMOST SCALE-FREE DENSITY PERTURBATIONS IN AN INFLATIONARY UNIVERSE [J].

BARDEEN, JM ;

STEINHARDT, PJ ;

TURNER, MS .

PHYSICAL REVIEW D, 1983, 28 (04) :679-693

[5]

Bozza V, 2003, J COSMOL ASTROPART P

[6] Back-reaction and the trans-Planckian problem of inflation reexamined [J].

Brandenberger, RH ;

Martin, J .

PHYSICAL REVIEW D, 2005, 71 (02) :023504-1

[7] The robustness of inflation to changes in super-Planck-scale physics [J].

Brandenberger, RH ;

Martin, J .

MODERN PHYSICS LETTERS A, 2001, 16 (15) :999-1006

[8]

CHERNIKOV NA, 1968, ANN I H POINCARE A, V9, P109

[9] Isocurvature constraints on gravitationally produced superheavy dark matter [J].

Chung, DJH ;

Kolb, EW ;

Riotto, A ;

Senatore, L .

PHYSICAL REVIEW D, 2005, 72 (02) :1-22

[10] Classical inflaton field induced creation of superheavy dark matter [J].

Chung, DJH .

PHYSICAL REVIEW D, 2003, 67 (08)

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