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Peculiarities of beta functions in sigma models

Gamayun, Oleksandr, Losev, Andrei, Shifman, Mikhail · 2023 · DOI 10.1007/jhep10(2023)097

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Cohomological beta function

math-ph · 2026-06-27 · unverdicted · novelty 6.0 · 2 refs

A cohomological approach reproduces the Cardy formula for the leading perturbative beta function in current-current deformations of 2D CFTs as the coefficient of an obstructing cocycle.

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  • Cohomological beta function math-ph · 2026-06-27 · unverdicted · none · ref 16 · 2 links

    A cohomological approach reproduces the Cardy formula for the leading perturbative beta function in current-current deformations of 2D CFTs as the coefficient of an obstructing cocycle.