A way to solve BCS-type pairing model

Details A way to solve BCS-type pairing model A way to solve BCS-type pairing model

2004-09-15

arxiv.org/abs/cond-mat/0409400v4

Physics

Condensed Matter

Superconductivity

5 pages, no figure, revised version

Scientific paper

We propose a way to solve BCS-type pairing model by to exactly solve its spin-analogy in the subspace. The advantages of our method are to avoid to directly deal with the approximate procedure and to transfer an exponentially complicated problem to a polynomial problem. Moreover, it builds the theoretical foundation of quantum simulation of pairing model and can be used to check the precision of quantum simulation. It is also helpful to understand the many-body quantum theory.

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