Stringy information and black holes

Amit Giveon, Nissan Itzhaki*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


We show that in string theory, due to non-perturbative effects, there are cases in which two states that semi-classically are completely different, are in fact the same. One state cannot be excited without exciting the other; they are two components of the same state in the exact theory. As a result, in some situations that include black holes, the nature of information in string theory is dramatically different than in field theory. In particular, each general-relativity state, that lives in the atmosphere of black fivebranes, is accompanied with an excitation that lives on folded strings, which fill the black-hole interior. This is likely related to the way that information is extracted from black holes in string theory, and we refer to it as stringy information.

Original languageAmerican English
Article number117
JournalJournal of High Energy Physics
Issue number6
StatePublished - 1 Jun 2020

Bibliographical note

Publisher Copyright:
© 2020, The Author(s).


  • Black Holes in String Theory
  • Conformal Field Models in String Theory


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