Canuto et al. 1976

Canuto, V., P.J. Adams, S.H. Hsieh, and E. Tsiang, 1976: Particle creation and Dirac's Large Numbers Hypothesis. Nature, 264, 485, doi:10.1038/264485a0.

In a recent paper Steigman claims to show that the creation of matter as postulated by Dirac is unnecessary. In particular he claims that a theory with a gravitational constant G varying as t^-1 automatically implies that the number of nucleons within the horizon should increase as t². If so, Dirac's hypothesis that N ~ t² must be due to spontaneous matter creation becomes unnecessary. We here show Steigman's claim to be incorrect.

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Canuto, V., Adams, P.J., Hsieh, S.H., and Tsiang, E.: Particle creation and Dirac's Large Numbers Hypothesis, Nature, 264, 485, doi:10.1038/264485a0, 1976.

Canuto, V., P.J. Adams, S.H. Hsieh, and E. Tsiang (1976), Particle creation and Dirac's Large Numbers Hypothesis, Nature, 264, 485, doi:10.1038/264485a0.

Canuto, V., P.J. Adams, S.H. Hsieh, and E. Tsiang, 1976: Particle creation and Dirac's Large Numbers Hypothesis. Nature, 264, 485, doi:10.1038/264485a0.

Canuto, V., Adams, P.J., Hsieh, S.H., & Tsiang, E. 1976, Nature, 264, 485, doi:10.1038/264485a0.

Canuto V, Adams PJ, Hsieh SH, Tsiang E. Particle creation and Dirac's Large Numbers Hypothesis, Nature 1976;264:485. doi:10.1038/264485a0.

V. Canuto, P.J. Adams, S.H. Hsieh, E. Tsiang, Nature 264, 485, doi:10.1038/264485a0 (1976).