The effects of quantum instantons on the thermodynamics of the CP^(N-1) model

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dc.creatorAndersen, Jens O.
dc.creatorBoer, Daniel
dc.creatorWarringa, Harmen J.
dc.date2006-02-08
dc.date2006-08-07
dc.date.accessioned2026-07-07T10:45:54Z
dc.date.available2026-07-07T10:45:54Z
dc.descriptionUsing the 1/N expansion, we study the influence of quantum instantons on the thermodynamics of the CP^(N-1) model in 1+1 dimensions. We do this by calculating the pressure to next-to-leading order in 1/N, without quantum instanton contributions. The fact that the CP^1 model is equivalent to the O(3) nonlinear sigma model, allows for a comparison to the full pressure up to 1/N^2 corrections for N=3. Assuming validity of the 1/N expansion for the CP^1 model makes it possible to argue that the pressure for intermediate temperatures is dominated by the effects of quantum instantons. A similar conclusion can be drawn for general N values by using the fact that the entropy should always be positive.
dc.description7 pages, 5 figures, revtex. To appear in PRD. Some arguments and conclusions reformulated
dc.identifierhttps://arxiv.org/abs/hep-th/0602082
dc.identifierhttp://arxiv.org/abs/hep-th/0602082
dc.identifierPhys.Rev.D74:045028,2006
dc.identifierdoi:10.1103/PhysRevD.74.045028
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/183060
dc.subjectHigh Energy Physics - Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe effects of quantum instantons on the thermodynamics of the CP^(N-1) model
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