Breached pair superfluidity: a brief review

Abstract

Interior gap superfluidity was introduced together with Frank Wilczek. Later on together with our collaborators, we generalized this new possibility of superfluidity to a broader concept, breach pair superfluidity. In the occasion to celebrate Professor Frank Wilczek's seventieth birthday and his productive career in several major areas in physics, I dedicate this note to recall the exciting times of developing this idea, the main aspects of the proposed phase, and the discussion on its stability condition.

10 pages, 1 figure, a chapter in Festschrift Volume in Honor of Frank Wilczek, World Scientific. Added references in revision

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