The dynamical creation/annihilation of a Dp-brane from D(p − 2) branes
Xiaoying Zhu
Figure 2. The profile g (σ) for the case of W = E2 > 0. The characteristic behavior of the case $W=-{E}^{2}\lt 0$ is similar but with the following differences: $g(\sigma )\geqslant \sqrt{E}$ and at $g(\sigma )\,=\sqrt{E},g^{\prime} (\sigma )=0$.