O. Obregon et al., Supersymmetry breaking and a normalizable wavefunction for the FRW (k=0) cosmological model, CLASS QUANT, 16(9), 1999, pp. 2861-2870
Making use of supersymmetry breaking selection rules under local n = 2 conf
ormal supersymmetry we are able to obtain a normalizable wavefunction (at z
ero energy) of the universe for the ERW cosmological model (k = 0). For thi
s purpose it is necessary to 'weight' the inner product with the scalar fac
tor R. The appropriate Hermitian operators are constructed and the expectat
ion value of R is calculated giving us the size of the universe.