For authors
Submission status

Archive (English)
      Volume 114
      Volume 113
      Volume 112
      Volume 111
      Volume 110
      Volume 109
      Volume 108
      Volume 107
      Volume 106
      Volume 105
      Volume 104
      Volume 103
      Volume 102
      Volume 101
      Volume 100
      Volume 99
      Volume 98
      Volume 97
      Volume 96
      Volume 95
      Volume 94
      Volume 93
VOLUME 105 | ISSUE 11 | PAGE 691
Fermi points and the Nambu sum rule in the polar phase of 3He1)
We discuss the polar phase of 3He, which is realized in the anisotropic aerogel. We consider it in the framework of the BCS model. In the absence of the spin-orbit interaction this model predicts the appearance of the Fermi line. However, it is topologically unstable. We demonstrate, that the spin-orbit interaction gives rise to the appearance of the two Fermi points instead of the Fermi line. In addition to the gapless Nambu-Goldstone bosons in this system the collective gapped bosonic states exist. Their gaps are calculated, and the corresponding Nambu sum rule is established.

Supplemental files