Ising model conformal boundary conditions from open string field theory

2014/01/30 by Matěj Kudrna, Matej Kudrna, Miroslav Rapcak +5
Mathematics · Physics and Astronomy · #Algebraic structures and combinatorial models #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Quantum Chromodynamics and Particle Interactions #hep-th

paper · pdf · doi:10.48550/arxiv.1401.7980

41 pages, 3 figures

arxiv created 2014/01/30 · openalex publication_date 2014/01/30 · arxiv updated 2014/01/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Given a consistent choice of conformally invariant boundary conditions in a two dimensional conformal field theory, one can construct new consistent boundary conditions by deforming with a relevant boundary operator and flowing to the infrared, or by a marginal deformation. Open string field theory provides a very universal tool to discover and study such new boundary theories. Surprisingly, it also allows one to go in the reverse direction and to uncover solutions with higher boundary entropy. We will illustrate our results on the well studied example of Ising model.

Citations

• The boundary state from open string fields
• THE BOUNDARY AND CROSSCAP STATES IN CONFORMAL FIELD THEORIES

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