TY - JOUR

T1 - Constraints on the chaotic inflationary scenario with a nonminimally coupled “inflaton” field from the cosmic microwave background radiation anisotropy

AU - Komatsu, Eiichiro

AU - Futamase, Toshifumi

PY - 1998

Y1 - 1998

N2 - We investigate the possibility to restrict the chaotic inflationary scenario with the large nonminimally coupled inflaton field [Formula Presented] considered by Fakir and Unruh by means of the observed cosmic microwave background radiation (CMBR) anisotropy. This model is characterized by the condition [Formula Presented] and [Formula Presented] where [Formula Presented] is the nonminimal coupling constant. We calculate the contributions of the long wavelength gravitational waves generated in the inflationary period to the CMBR anisotropy quadrupole moment. We obtain the constraint [Formula Presented] where [Formula Presented] is the self-coupling and [Formula Presented] means the initial value of [Formula Presented] Combining this with the previously obtained constraint [Formula Presented] we conclude that the initial value has to be [Formula Presented] If the self-coupling has reasonable values of order [Formula Presented] then [Formula Presented] and [Formula Presented] where [Formula Presented] is the Planck mass.

AB - We investigate the possibility to restrict the chaotic inflationary scenario with the large nonminimally coupled inflaton field [Formula Presented] considered by Fakir and Unruh by means of the observed cosmic microwave background radiation (CMBR) anisotropy. This model is characterized by the condition [Formula Presented] and [Formula Presented] where [Formula Presented] is the nonminimal coupling constant. We calculate the contributions of the long wavelength gravitational waves generated in the inflationary period to the CMBR anisotropy quadrupole moment. We obtain the constraint [Formula Presented] where [Formula Presented] is the self-coupling and [Formula Presented] means the initial value of [Formula Presented] Combining this with the previously obtained constraint [Formula Presented] we conclude that the initial value has to be [Formula Presented] If the self-coupling has reasonable values of order [Formula Presented] then [Formula Presented] and [Formula Presented] where [Formula Presented] is the Planck mass.

UR - http://www.scopus.com/inward/record.url?scp=33750644589&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33750644589&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.58.023004

DO - 10.1103/PhysRevD.58.023004

M3 - Article

AN - SCOPUS:33750644589

SN - 1550-7998

VL - 58

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 2

ER -