Speaker
Victor Franken
(Ghent University)
Description
The quantum null energy condition (QNEC) is a well-known and proven information-theoretic lower bound on the expectation value of energy density in quantum field theory. The bound can be predicted simply as a consequence of a conjectured quantum gravity principle called the restricted quantum focusing conjecture (RQFC). Here, we show that for conformal field theories in spacetime of dimension greater than two, a stronger-than-QNEC bound is predictable from the RQFC. This strengthened QNEC says that $T_{kk} -\frac{S''}{\mathcal{A}} \geq \kappa \mathcal{A} \left(\frac{S'}{\mathcal{A}}\right)^2$, where derivatives denote null variations of a Rindler wedge in region of area $\mathcal{A}$.
Author
Victor Franken
(Ghent University)