Abstract
We define a notion of zero-temperature entropy for impurities (line defects) in d + 1 space-time dimensions. We show that this entropy obeys a simple evolution equation under the renormalization group. We apply this result for impurities in magnets and in gauge theories. We find new critical impurities and phase transitions.
| Original language | English |
|---|---|
| Title of host publication | 50 Years of the Renormalization Group |
| Subtitle of host publication | Dedicated to the Memory of Michael E Fisher |
| Publisher | World Scientific Publishing Co. |
| Pages | 373-383 |
| Number of pages | 11 |
| ISBN (Electronic) | 9789811282386 |
| ISBN (Print) | 9789811282379 |
| DOIs | |
| State | Published - Jan 1 2024 |
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