TL;DR
This paper investigates how deformations in the CHS model affect its mass spectrum, revealing the emergence of non-localized tachyons and discussing their potential condensation.
Contribution
It provides a detailed analysis of exactly marginal deformations in the CHS model and explores the implications for tachyonic instabilities and brane configurations.
Findings
Presence of non-localized tachyons due to deformation
Similar effects observed in NS5-brane related CFTs
Brief discussion on tachyon condensation mechanisms
Abstract
We calculate mass spectrum of CHS model deformed by an exactly marginal operator, and find that there are tachyons which are not localized in the target space. Similar deformation is discussed in another CFT which corresponds to separated NS5-branes. A condensation of the tachyons is briefly argued.
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