content_image/367410.jpg content_image/367403.jpg content_image/367404.jpg content_image/367405.jpg content_image/367406.jpg
## Supporting online material 

## Heating due to two-body inelastic p -wave collisions 

Loss of trapped atoms or molecules due to inelastic collisions gives rise to heating through a mechanism called “anti-evaporation”, where particles removed from the trap have, on average, a lower energy than the remaining particles. Here, we model the heating due to inelastic two-body p -wave collisional loss in a trapped gas, as relevant to our experiments. 

To accommodate the spatial anisotropy of the dipole-dipole interaction and the possibility of an anisotropic energy distribution in the trapped gas, we define “temperatures” along three spatial directions using 

<img src='content_image/367410.jpg'>

where the index i = x, y, z and N is the number of molecules. As the trap shape is a flat disk perpendicular to the vertical ( z ) axis, which is also the direction of the electric field, it is natural to assume that the temperatures in the two radial trap directions, T$_{x}$ and T$_{y}$ , are equal. The energies E$_{i}$ are defined as 

<img src='content_image/367403.jpg'>

where m is the particle mass, ω$_{z}$ and ω$_{r}$ are the axial and radial trapping frequencies, respectively, and the sum is taken over all particles in the trap. The heating rates are then given by 

<img src='content_image/367404.jpg'>

Each two-body inelastic collision removes two particles, so the loss rate is given by 

where Γ$_{coll}$ is the inelastic collision rate per particle. Similarly, 

<img src='content_image/367405.jpg'>

<img src='content_image/367406.jpg'>

