Physics – Condensed Matter – Statistical Mechanics
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvd..39..462f&link_type=abstract
Physical Review D (Particles and Fields), Volume 39, Issue 2, 15 January 1989, pp.462-469
Physics
Condensed Matter
Statistical Mechanics
19
Quantum Statistical Mechanics, Origin And Formation Of The Universe
Scientific paper
Two-dimensional quantum cosmology is studied to clarify the issue associated with the arrow of time. We introduce a density-matrix description for the minisuperspace by projecting out nonzero modes of the wave function of the whole Universe. Thermodynamic time is determined by the direction in which the quantum coherence of minisuperspace variables decreases. This arrow of time is compared with that of dynamical time which is determined by the semiclassical approximation for the density matrix. We reconfirm that the global time cannot properly be defined for the thermodynamic times as well as for the dynamical time in a closed universe. The arrows of dynamical and thermodynamic times coincide with the cosmological arrow of time.
Fukuyama Takeshi
Morikawa Masahiro
No associations
LandOfFree
Two-dimensional quantum cosmology: Directions of dynamical and thermodynamic arrows of time does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Two-dimensional quantum cosmology: Directions of dynamical and thermodynamic arrows of time, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-dimensional quantum cosmology: Directions of dynamical and thermodynamic arrows of time will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-828632