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Showing 1993Show all
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cond-mat1993★ 11 cited
The relationship between perturbation theory and direct calculations of rare-earth transition intensities
M. F. Reid, G. W. Burdick, H. J. Kooy
We use a simplified calculation to demonstrate the equivalence between three different methods for calculating transition line strengths [B.R. Judd and D. R. Pooler, J. Phys. C 15…
gr-qc1993★ 48 cited
Exact Superstring Motivated Cosmological Models
Richard Easther
We present a number of new, exact scalar field cosmologies where the potential consists of two or more exponential terms. Such potentials are motivated by supergravity or superstri…