Beyond the c=1 barrier in two-dimensional quantum gravity

Thorleifsson G, Petersson B (1998)
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS 63: 745-747.

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We introduce a simple model of touchingrandom surfaces, by adding a chemical potential rho for "minimal necks", and study this model numerically coupled to a Gaussian model in d-dimensions (for central charge c = d = 0, 1 and 2). For c less than or equal to 1, this model has a phase transition to branched polymers, for sufficiently large p. For c 2, however, extensive simulations indicate that this transition is replaced by a cross-over behavior on finite lattices - the model is always in the branched polymer phase. This supports recent speculations that, in 2d-gravity, the behavior observe in simulations for c less than or equal to 1, is dominated by finite size effects, which are exponentially enhanced as c --> 1(+).
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Thorleifsson G, Petersson B. Beyond the c=1 barrier in two-dimensional quantum gravity. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. 1998;63:745-747.
Thorleifsson, G., & Petersson, B. (1998). Beyond the c=1 barrier in two-dimensional quantum gravity. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 63, 745-747. doi:10.1016/S0920-5632(97)00891-8
Thorleifsson, G., and Petersson, B. (1998). Beyond the c=1 barrier in two-dimensional quantum gravity. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS 63, 745-747.
Thorleifsson, G., & Petersson, B., 1998. Beyond the c=1 barrier in two-dimensional quantum gravity. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 63, p 745-747.
G. Thorleifsson and B. Petersson, “Beyond the c=1 barrier in two-dimensional quantum gravity”, NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, vol. 63, 1998, pp. 745-747.
Thorleifsson, G., Petersson, B.: Beyond the c=1 barrier in two-dimensional quantum gravity. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. 63, 745-747 (1998).
Thorleifsson, G, and Petersson, Bengt. “Beyond the c=1 barrier in two-dimensional quantum gravity”. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS 63 (1998): 745-747.
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