3 problems

Consider a system of energy $E$ and size $R$ falling into a black hole, and let $\Delta S_{BH}$ be the resulting change in black-hole entropy. Bekenstein bound conjecture. The seco…

Let $S=A/(4G\hbar)$ be the Bekenstein–Hawking entropy of a black hole with mass $M$ and horizon area $A$. Entropy–mass bound conjecture. The entropy should satisfy … with equality…

Let $(M,g_{ab})$ be a smooth classical spacetime and let $p$ be a point in it. Consider the future null cone of $p$, and let $B$ be any 2-sphere cross-section of the null cone such…