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University of Cambridge > Talks.cam > Isaac Newton Institute Seminar Series > Finite Entanglement Entropy in String Theory

## Finite Entanglement Entropy in String TheoryAdd to your list(s) Download to your calendar using vCal - Atish Dabholkar (Abdus Salam International Centre for Theoretical Physics)
- Friday 01 December 2023, 10:00-11:00
- Seminar Room 1, Newton Institute.
If you have a question about this talk, please contact nobody. BLHW03 - Bridges between holographic quantum information and quantum gravity I discuss physical motivations from black hole physics and holographyfor expecting finite quantum entanglement entropy in quantum gravity. I describe recent and earlier results in defining such a notion in perturbative string theory by a stringy analog of the replica method using orbifolds constructed for any odd positive integer N. The entropy so defined naturally includes a classical piece and is manifestly UV finitebut has potential tachyonic IR divergences. I show that for several string compactifications, the specific structure of the tachyonic spectrum allows for a re-summation and analytic continuation to the physical region where the IR divergences are absent and the resulting entropy is finite to one-loop order. This talk is part of the Isaac Newton Institute Seminar Series series. ## This talk is included in these lists:- All CMS events
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