Measurements of the anisotropic mass of magnons confined in a harmonic trap in superfluid 3He-B

Zavjalov, V. V.; Autti, S.; Eltsov, V. B.; Heikkinen, P. J.

doi:10.1134/s0021364015120152

Cited by 14 publications

(13 citation statements)

References 18 publications

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“…3e , the measured acoustic magnon resonance period is plotted as a function of pressure. The results are in a good agreement with equation (2) , where values of the spin-wave velocity are taken from our recent measurements 29 .…”

Section: Resultssupporting

confidence: 87%

Light Higgs channel of the resonant decay of magnon condensate in superfluid 3He-B

et al. 2016

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In superfluids the order parameter, which describes spontaneous symmetry breaking, is an analogue of the Higgs field in the Standard Model of particle physics. Oscillations of the field amplitude are massive Higgs bosons, while oscillations of the orientation are massless Nambu-Goldstone bosons. The 125 GeV Higgs boson, discovered at Large Hadron Collider, is light compared with electroweak energy scale. Here, we show that such light Higgs exists in superfluid 3He-B, where one of three Nambu-Goldstone spin-wave modes acquires small mass due to the spin–orbit interaction. Other modes become optical and acoustic magnons. We observe parametric decay of Bose-Einstein condensate of optical magnons to light Higgs modes and decay of optical to acoustic magnons. Formation of a light Higgs from a Nambu-Goldstone mode observed in 3He-B opens a possibility that such scenario can be realized in other systems, where violation of some hidden symmetry is possible, including the Standard Model.

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Section: Resultssupporting

confidence: 87%

Light Higgs channel of the resonant decay of magnon condensate in superfluid 3He-B

et al. 2016

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“…Nevertheless, as soon as we consider the action potential as the electro-physiological trace of the nuon, we thus have the opportunity to exploit a full dualism of points of view and formal descriptions in order to describe the generation and propagation of nerve impulses, especially when classic electrophysiological models break down. In this case, SFT [ñ] is a powerful tool that allows us to use the techniques and results of theoretical and general physics [ 42 , 43 ]. As we have just pointed out in the previous paragraph for the case of saltatory conduction, it is advantageous to exploit the dualism performing both the representations.…”

Section: Conclusion and Possible Insightsmentioning

confidence: 99%

Statistical field theory of the transmission of nerve impulses

Balzo

2021

Theor Biol Med Model

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Background Stochastic processes leading voltage-gated ion channel dynamics on the nerve cell membrane are a sufficient condition to describe membrane conductance through statistical mechanics of disordered and complex systems. Results Voltage-gated ion channels in the nerve cell membrane are described by the Ising model. Stochastic circuit elements called “Ising Neural Machines” are introduced. Action potentials are described as quasi-particles of a statistical field theory for the Ising system. Conclusions The particle description of action potentials is a new point of view and a powerful tool to describe the generation and propagation of nerve impulses, especially when classical electrophysiological models break down. The particle description of action potentials allows us to develop a new generation of devices to study neurodegenerative and demyelinating diseases as Multiple Sclerosis and Alzheimer’s disease, even integrated by connectomes. It is also suitable for the study of complex networks, quantum computing, artificial intelligence, machine and deep learning, cryptography, ultra-fast lines for entanglement experiments and many other applications of medical, physical and engineering interest.

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“…Apart from the surface-related last term on the r.h.s., Eq. (51) coincides with the equations considered before to describe spin waves on the optical branch modified by the n-vector texture [34,39]. The surface term in (51) yields a finite lifetime of the spin waves at the frequencies where Imχ bs = 0.…”

Section: Transverse Resonance In a Texturementioning

confidence: 76%

“…To describe the transverse resonance which occurs at frequencies close to the Larmor frequency ω ≈ ω L we project the above general expressions (42,43,50) on the spin state corresponding to the optical magnons [34,39,38] θ = Ψ s opt , where Ψ is the complex amplitude which can be considered as a wave function and the polarization vector is s opt = (1, i, 0)/ √ 2.…”

Section: Transverse Resonance In a Texturementioning

confidence: 99%

Quasiclassical Theory of Spin Dynamics in Superfluid $$^3$$ 3 He: Kinetic Equations in the Bulk and Spin Response of Surface Majorana States

Силаев¹

2018

J Low Temp Phys

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We develop a theory based on the formalism of quasiclassical Green's functions to study the spin dynamics in superfluid 3 He. First, we derive kinetic equations for the spin-dependent distribution function in the bulk superfluid reproducing the results obtained earlier without quasiclassical approximation. Then we consider spin dynamics near the surface of fully gapped 3 He-B phase taking into account spin relaxation due to the transitions in the spectrum of localized fermionic states. The lifetimes of longitudinal and transverse spin waves are calculated taking into account the Fermi-liquid corrections which lead to a crucial modification of fermionic spectrum and spin responses.

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Measurements of the anisotropic mass of magnons confined in a harmonic trap in superfluid 3He-B

Cited by 14 publications

References 18 publications

Light Higgs channel of the resonant decay of magnon condensate in superfluid 3He-B

Light Higgs channel of the resonant decay of magnon condensate in superfluid 3He-B

Statistical field theory of the transmission of nerve impulses

Quasiclassical Theory of Spin Dynamics in Superfluid $$^3$$ 3 He: Kinetic Equations in the Bulk and Spin Response of Surface Majorana States

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