TY - JOUR
T1 - Quantum back reaction in integrable cosmology
AU - Hotta, M.
AU - Suzuki, Y.
AU - Tamiya, Y.
AU - Yoshimura, M.
PY - 1993/1/1
Y1 - 1993/1/1
N2 - Two-dimensional dilaton gravity theories with a conserved current admit analytic integration of quantum back reaction in the semiclassical limit, yielding only a few classes of homogeneous cosmological solutions. One class of solutions describe a toy model of an inflationary universe which decays into a flat universe due to quantum back reaction, despite the apparent presence of a cosmological constant, thus providing a possible resolution of the cosmological constant problem. In another class of solutions the semiclassical approximation breaks down either initially or finally in the cosmological evolution.
AB - Two-dimensional dilaton gravity theories with a conserved current admit analytic integration of quantum back reaction in the semiclassical limit, yielding only a few classes of homogeneous cosmological solutions. One class of solutions describe a toy model of an inflationary universe which decays into a flat universe due to quantum back reaction, despite the apparent presence of a cosmological constant, thus providing a possible resolution of the cosmological constant problem. In another class of solutions the semiclassical approximation breaks down either initially or finally in the cosmological evolution.
UR - http://www.scopus.com/inward/record.url?scp=26744439172&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=26744439172&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.48.707
DO - 10.1103/PhysRevD.48.707
M3 - Article
AN - SCOPUS:26744439172
SN - 0556-2821
VL - 48
SP - 707
EP - 712
JO - Physical review D: Particles and fields
JF - Physical review D: Particles and fields
IS - 2
ER -