Dynamics of a one-dimensional spinor Bose liquid: a phenomenological approach

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Kamenev, A.
Glazman, L. I.
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The ground state of a spinor Bose liquid is ferromagnetic, while the softest excitation above the ground state is the magnon mode. The dispersion relation of the magnon in a one-dimensional liquid is periodic in the wavenumber q with the period 2\pi n, determined by the density n of the liquid. Dynamic correlation functions, such as e.g. spin-spin correlation function, exhibit power-law singularities at the magnon spectrum, $\omega\to\omega_m(q,n)$. Without using any specific model of the inter-particle interactions, we relate the corresponding exponents to independently measurable quantities $\partial\omega_m/\partial q$ and $\partial\omega_m/\partial n$.
Comment: 4 pages,
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Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Other Condensed Matter
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