B-type anomaly coefficients of holographic defects

Abstract: Even dimensional conformal field theories (CFTs) develop conformal/Weyl anomalies which inflict a (non-vanishing) expectation value on the trace of the energy-momentum/stress tensor. The presence of boundaries in CFTs gives rise to extra anomaly coefficients and extra central charges, which show up in both even and odd dimensions and can be used to classify defect CFTs, much like central charges are used to classify pure CFTs.

This talk is about the computation of boundary anomaly coefficients in (codimension-1) holographic defect CFTs. These are described by domain wall versions of N = 4 SYM that are holographically dual to the D3-D5 and the D3-D7 probe-brane systems. Starting from the explicit expression of the improved energy-momentum tensor of N = 4 SYM, we will determine its two and three-point functions in the presence of the domain walls and extract the boundary anomaly coefficients, to leading order in perturbation theory. In the same process, we will also determine the two and three-point function of the corresponding displacement operators.

general relativity and quantum cosmologyHEP - experimentHEP - latticeHEP - phenomenologyHEP - theory

Audience: researchers in the topic

( slides )

---

NKUA HEP Seminars

Series comments: Please email tomeasb(at)gmail(dot)com to obtain the meeting link and password. Unless explicitly requested otherwise, your email address will be included in our seminar mailing list.

---