Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Thuneberg, E."'
Autor:
Autti, S., Heikkinen, P. J., Laine, S. M., Mäkinen, J. T., Thuneberg, E. V., Zavjalov, V. V., Eltsov, V. B.
Publikováno v:
Phys. Rev. Research 3, 032002 (2021)
A magnon Bose-Einstein condensate in superfluid $^3$He is a fine instrument for studying the surrounding macroscopic quantum system. At zero temperature, the BEC is subject to a few, distinct forms of decay into other collective excitations, owing to
Externí odkaz:
http://arxiv.org/abs/2102.00419
Autor:
Laine, S. M., Thuneberg, E. V.
Publikováno v:
Phys. Rev. B 98, 174516 (2018)
We consider a vortex line in the B phase of superfluid $^3$He under uniformly precessing magnetization. The magnetization exerts torque on the vortex, causing its order parameter to oscillate. These oscillations generate spin waves, which is analogou
Externí odkaz:
http://arxiv.org/abs/1809.10484
Publikováno v:
Phys. Rev. B 98, 144512 (2018)
We study the drag force on objects moving in a Fermi superfluid at velocities on the order of the Landau velocity $v_L$. The expectation has been that $v_L$ is the critical velocity beyond which the drag force starts to increase towards its normal-st
Externí odkaz:
http://arxiv.org/abs/1806.02554
Autor:
Kuorelahti, J. A., Thuneberg, E. V.
We discuss surface scattering in terms of bidirectional reflectance distribution function. We formulate a boundary condition that in addition to diffuse and specular reflection has tilted diffuse reflection. We apply the boundary condition to calcula
Externí odkaz:
http://arxiv.org/abs/1706.10090
Publikováno v:
Phys. Rev. B 94, 184103 (2016)
We have studied the transmission of transverse oscillations through a thin Fermi liquid film, using Landau's Fermi liquid theory. Fermi liquid theory describes the dynamics of interacting, degenerate fermion systems, for example non-superfluid, i.e.\
Externí odkaz:
http://arxiv.org/abs/1605.09358
Autor:
Laine, S. M., Thuneberg, E. V.
Publikováno v:
J. Low Temp. Phys. 183, 222 (2016)
We calculate the relaxation of Brinkman-Smith mode via Leggett-Takagi relaxation in the presence of an isolated vortex in superfluid 3He-B. The calculation is based on an analytical solution of the order parameter far from the vortex axis. We obtain
Externí odkaz:
http://arxiv.org/abs/1601.05333
Publikováno v:
Rep. Prog. Phys. 80, 056002 (2017)
We review the physical phenomena that arise when quantum mechanical energy levels are modulated in time. The dynamics resulting from changes in the transition frequency is a problem studied since the early days of quantum mechanics. It has been of co
Externí odkaz:
http://arxiv.org/abs/1512.04027
Publikováno v:
Phys. Rev. Lett. 115, 235301 (2015)
We study the spectrum of fermion states localized within the vortex core of a weak-coupling p-wave superfluid. The low energy spectrum consists of two anomalous branches that cross the Fermi level as functions of the impact parameter, and generate la
Externí odkaz:
http://arxiv.org/abs/1505.02136
The Bloch-oscillating transistor (BOT) is an amplifier that utilizes semiclassical dynamics of states in energy bands under traveling quasimomentum. In a BOT, a single quasiparticle tunneling across a base tunnel junction switches the state of a supe
Externí odkaz:
http://arxiv.org/abs/1412.7431
Autor:
Silveri, M. P., Kumar, K. S., Tuorila, J., Li, J., Vepsäläinen, A., Thuneberg, E. V., Paraoanu, G. S.
Publikováno v:
New J. Phys. 17 (2015) 043058
When the level separation of a qubit is modulated periodically across an avoided crossing, tunneling to the excited state - and consequently Landau-Zener-St\"uckelberg interference - can occur. The types of modulation studied so far correspond to a c
Externí odkaz:
http://arxiv.org/abs/1412.3982