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arXiv · 1505.03884

Pomeranchuk instability and Bose condensation of scalar quanta in a Fermi liquid

E. E. Kolomeitsev·D. N. Voskresensky
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Abstract

We study excitations in a normal Fermi liquid with a local scalar interaction. Spectrum of bosonic scalar-mode excitations is investigated for various values and momentum dependence of the scalar Landau parameter $f_0$ in the particle-hole channel. For $f_0 >0$ the conditions are found when the phase velocity on the spectrum of the zero sound acquires a minimum at a non-zero momentum. For $-1 0$.

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E. E. Kolomeitsev, D. N. Voskresensky. 2015-05-14. Pomeranchuk instability and Bose condensation of scalar quanta in a Fermi liquid. https://arxiv.org/abs/1505.03884

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