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The University of Southampton
STAG Research Centre

String Theory seminar - Pablo Bueno Seminar

Time:
13:00 - 14:00
Date:
2 December 2015
Venue:
54/10031 (10C)

For more information regarding this seminar, please email Da-Wei Pang at [email protected] .

Event details

Universal entanglement of singular surfaces

The entanglement entropy in three-dimensional conformal field theories (CFTs) receives a logarithmic contribution characterized by a regulator-independent function a(θ) when the entangling surface contains a sharp corner with opening angle θ. In the smooth-surface limit, (θ → π), this corner contribution vanishes as a(θ) = σ(θ−π)^2. I will review our recent conjecture that for any three-dimensional CFT, this corner coefficient σ is determined by C_T, the coefficient appearing in the two-point function of the stress tensor through the relation σ/CT = π^2/24. I will also describe the extension of this conjecture to general Rényi entropies and higher-dimensional CFTs, and comment on the implications of our findings.

Speaker information

Pablo Bueno , KU Leuven, Belgium.

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