Abstract
We show that a simple extension of the standard BCS Hamiltonian leads to an infinite number of BCS eigenstates with different energy gaps and self-similar properties, described by a cyclic renormalization group flow of the BCS coupling constant which returns to its original value after a finite renormalization group time.
- Received 21 October 2003
DOI:https://doi.org/10.1103/PhysRevB.69.020505
©2004 American Physical Society
