TY - JOUR
T1 - A closed, expanding universe in string theory
AU - Nappi, Chiara R.
AU - Witten, Edward
N1 - Funding Information:
Research supported in part by the Ambrose Monell Foundation. Research supported in part by NSF Grant PHY91-06210. In particular, refs. \[1 1,12 \] discuss different real forms of the coset we will analyze, not directly leading to the cosmological solution. This coset has also been mentioned by several other authors without analyzing its content.
PY - 1992/10/29
Y1 - 1992/10/29
N2 - We present a conformal field theory - obtained from a gauged WZW model - that describes a closed, inhomogeneous expanding and recollapsing universe in 3 + 1 dimensions. A possible violation of cosmic censorship is avoided because the universe recollapses just when a naked singularity was about to form. The model has been chosen to have c = 4 (or c ̂ = 4 in the supersymmetric case), just like four dimensional Minkowski space.
AB - We present a conformal field theory - obtained from a gauged WZW model - that describes a closed, inhomogeneous expanding and recollapsing universe in 3 + 1 dimensions. A possible violation of cosmic censorship is avoided because the universe recollapses just when a naked singularity was about to form. The model has been chosen to have c = 4 (or c ̂ = 4 in the supersymmetric case), just like four dimensional Minkowski space.
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U2 - 10.1016/0370-2693(92)90888-B
DO - 10.1016/0370-2693(92)90888-B
M3 - Article
AN - SCOPUS:0000309635
SN - 0370-2693
VL - 293
SP - 309
EP - 314
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3-4
ER -