“…Following Leland (
1998), the firm commits to a stationary debt structure and rolls over a constant amount of debt
at each point in time; P denotes the total face (book) value of debt and ϕ the refinancing intensity, where
. Following DeMarzo and He (
2021), the instantaneous coupon payment
increases in the face value of debt, where
is a constant. As in Leland (
1994), we further assume that there are bankruptcy costs α, and debt holders take over the firm in the event of default and recover only a fraction
of the unlevered firm value.…”