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Entropic C-theorems in free and interacting two-dimensional field theories | | Jose Gaite
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14 Oct 1998 | | Journal: | Phys.Rev. D61 (2000) 045006 | | Subject: | High Energy Physics - Theory; Statistical Mechanics | hep-th cond-mat.stat-mech | | Abstract: | The relative entropy in two-dimensional field theory is studied on a cylinder geometry, interpreted as finite-temperature field theory. The width of the cylinder provides an infrared scale that allows us to define a dimensionless relative entropy analogous to Zamolodchikov’s $c$ function. The one-dimensional quantum thermodynamic entropy gives rise to another monotonic dimensionless quantity. I illustrate these monotonicity theorems with examples ranging from free field theories to interacting models soluble with the thermodynamic Bethe ansatz. Both dimensionless entropies are explicitly shown to be monotonic in the examples that we analyze. | | Source: | arXiv, hep-th/9810107 | | Services: | Forum | Review | PDF | Favorites | |
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