Abstract
A time-independent causal system is considered, in which the effect depends nonlinearly in an nth-degree way on the cause. It is shown that there are Kramers-Kronig-type dispersion relations for the transform of the response function.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2768-2770 |
| Number of pages | 3 |
| Journal | Physical Review B |
| Volume | 11 |
| Issue number | 8 |
| DOIs | |
| State | Published - 1975 |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics