<p>In this work, we study and generalize the spacetime banana proposal for computing correlation functions of huge operators in the context of the AdS<sub>3</sub>/CFT<sub>2</sub> correspondence. First, we introduce time-like and space-like EOW branes into the proposal and demonstrate that: 1) a holographic dual of the one-point function in a BCFT can be obtained and its modified on-shell action reproduces the expected BCFT result; and 2) the GHY term on the stretched horizon can be replaced by the action of an EOW brane which wraps the horizon. Next, we discuss the two (one)-point function of huge spinning operators described by a rotating black hole in the bulk. We show that simply adding a GHY term on the stretched horizon is insufficient to reproduce the CFT results; instead, the appropriate modified action should be the micro-canonical action. Finally, we revisit the existing approaches for computing correlation functions using the gravity on-shell action of conical geometry or Bañados geometries. Surprisingly, we find that the on-shells actions of the Bañados geometries or the gravity solutions in the FG gauge yield unexpected incorrect results.</p>

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Spacetime bananas with EOW branes and spins

  • Jia Tian,
  • Tengzhou Lai,
  • Farzad Omidi

摘要

In this work, we study and generalize the spacetime banana proposal for computing correlation functions of huge operators in the context of the AdS3/CFT2 correspondence. First, we introduce time-like and space-like EOW branes into the proposal and demonstrate that: 1) a holographic dual of the one-point function in a BCFT can be obtained and its modified on-shell action reproduces the expected BCFT result; and 2) the GHY term on the stretched horizon can be replaced by the action of an EOW brane which wraps the horizon. Next, we discuss the two (one)-point function of huge spinning operators described by a rotating black hole in the bulk. We show that simply adding a GHY term on the stretched horizon is insufficient to reproduce the CFT results; instead, the appropriate modified action should be the micro-canonical action. Finally, we revisit the existing approaches for computing correlation functions using the gravity on-shell action of conical geometry or Bañados geometries. Surprisingly, we find that the on-shells actions of the Bañados geometries or the gravity solutions in the FG gauge yield unexpected incorrect results.