Future CMB cosmological constraints in a dark coupled universe

Journal Article · Sat May 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.103534· OSTI ID:21409721

Martinelli, Matteo; Melchiorri, Alessandro ^[1]; Honorez, Laura Lopez ^[2]; Mena, Olga ^[3]

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1. Physics Department and INFN, Universita di Roma 'La Sapienza', Ple Aldo Moro 2, 00185, Rome (Italy)
2. Departamento de Fisica Teorica, Universidad Autonoma de Madrid IFT-UAM/CSIC, 28049 Cantoblanco, Madrid (Spain)
3. Departamento de Fisica Teorica, IFIC, Universidad de Valencia-CSIC, Edificio de Institutos de Paterna, Apt. 22085, 46071 Valencia (Spain)

Cosmic microwave background satellite missions as the ongoing Planck experiment are expected to provide the strongest constraints on a wide set of cosmological parameters. Those constraints, however, could be weakened when the assumption of a cosmological constant as the dark energy component is removed. Here we show that it will indeed be the case when there exists a coupling among the dark energy and the dark matter fluids. In particular, the expected errors on key parameters as the cold dark matter density and the angular diameter distance at decoupling are significantly larger when a dark coupling is introduced. We show that it will be the case also for future satellite missions as EPIC, unless CMB lensing extraction is performed.

• OSTI ID: 21409721
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 10; Other Information: DOI: 10.1103/PhysRevD.81.103534; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGICAL CONSTANT
COUPLING
DECOUPLING
DENSITY
EXTRACTION
FLUIDS
NONLUMINOUS MATTER
RELICT RADIATION
UNIVERSE
ELECTROMAGNETIC RADIATION
MATTER
MICROWAVE RADIATION
PHYSICAL PROPERTIES
RADIATIONS
SEPARATION PROCESSES