Nambu identity and collective modes in superconductors and superfluid He-3 Academic Article

abstract

• Collective modes manifest themselves in a variety of different physical systems ranging from superconductors to superfluid 3He. The collective modes are generated via the Higgs-Anderson mechanism that is based on the symmetry breaking double well potential. Recently, collective modes were explored in superconducting NbN and InO in the presence of a strong terahertz laser field. In both cases a single collective mode that oscillates with twice the frequency of the superconducting energy gap was discovered. Superfluid 3He is the host for a whole variety of collective modes. In particular, in the superfluid 3He B-phase, two massive collective modes were found with masses 8/5 and 12/5 . We show that for both cases of the superconducting films and for the superfluid 3He B-phase, the collective modes satisfy the Nambu identity that relates the masses of different collective modes to the energy gap parameter .

authors

• Lee, David

published proceedings

• PHYSICA SCRIPTA

altmetric score

• 1.75

author list (cited authors)

• Shchedrin, G., & Lee, D. M.

citation count

• 2

complete list of authors

• Shchedrin, Gavriil||Lee, David M

publication date

• January 2016

publisher

• IOP Publishing  Publisher

published in

• Physica Scripta  Journal

keywords

• Collective Modes
• Nambu Idenity
• Superconductors
• Superfluid He-3

Digital Object Identifier (DOI)

• 10.1088/0031-8949/91/1/013006

start page

• 013006

end page

• 013006

volume

• 91

issue

• 1

URL

• http://dx.doi.org/10.1088/0031-8949/91/1/013006