Zobrazeno 1 - 10
of 6 334
pro vyhledávání: '"A. Levitin"'
Autor:
Heikkinen, Petri J., Levitin, Lev V., Rojas, Xavier, Singh, Angadjit, Eng, Nathan, Casey, Andrew, Saunders, John, Vorontsov, Anton, Zhelev, Nikolay, Sebastian, Abhilash Thanniyil, Parpia, Jeevak M.
Anisotropic pair breaking close to surfaces favors chiral superfluid $^3$He-A over time-reversal invariant $^3$He-B. Confining superfluid $^3$He into a cavity of height $D$ of the order of the Cooper pair size characterized by the coherence length $\
Externí odkaz:
http://arxiv.org/abs/2409.12901
We describe a compact calorimeter that opens ultra-low temperature heat capacity studies of small metal crystals in moderate magnetic fields. The performance is demonstrated on the canonical heavy Fermion metal YbRh2Si2. Thermometry is provided by a
Externí odkaz:
http://arxiv.org/abs/2407.01434
Autor:
Jillson, Noah, Levitin, Daniel, Saldin, Pramana, Stuopis, Katerina, Wang, Qianruixi, Xue, Kaicheng
Relatively little is known about the discrete horospheres in hyperbolic groups, even in simple settings. In this paper we work with hyperbolic one-ended right-angled Coxeter groups and describe two graph structures that mimic the intrinsic metric on
Externí odkaz:
http://arxiv.org/abs/2406.18774
We prove explicit uniform two-sided bounds for the phase functions of Bessel functions and of their derivatives. As a consequence, we obtain new enclosures for the zeros of Bessel functions and their derivatives in terms of inverse values of some ele
Externí odkaz:
http://arxiv.org/abs/2402.06956
Autor:
Autti, S., Casey, A., Eng, N., Darvishi, N., Franchini, P., Haley, R. P., Heikkinen, P. J., Kemp, A., Leason, E., Levitin, L. V., Monroe, J., March-Russel, J., Noble, M. T., Prance, J. R., Rojas, X., Salmon, T., Saunders, J., Smith, R., Thompson, M. D., Tsepelin, V., West, S. M., Whitehead, L., Zhang, K., Zmeev, D. E.
Publikováno v:
Journal of Low Temperature Physics, Special Issue: Quantum Fluids and Solids (QFS2023)
We report the results of radioactivity assays and heat leak calculations for a range of common cryogenic materials, considered for use in the QUEST-DMC superfluid 3He dark matter detector. The bolometer, instrumented with nanomechanical resonators, w
Externí odkaz:
http://arxiv.org/abs/2402.00181
Autor:
Hindmarsh, Mark, Sauls, J. A., Zhang, Kuang, Autti, S., Haley, Richard P., Heikkinen, Petri J., Huber, Stephan J., Levitin, Lev V., Lopez-Eiguren, Asier, Mayer, Adam J., Rummukainen, Kari, Saunders, John, Zmeev, Dmitry
Publikováno v:
Journal of Low Temperature Physics, 215, 495-524 (2024)
First order phase transitions in the very early universe are a prediction of many extensions of the Standard Model of particle physics and could provide the departure from equilibrium needed for a dynamical explanation of the baryon asymmetry of the
Externí odkaz:
http://arxiv.org/abs/2401.07878
Autor:
Heikkinen, Petri J., Eng, Nathan, Levitin, Lev V., Rojas, Xavier, Singh, Angadjit, Autti, Samuli, Haley, Richard P., Hindmarsh, Mark, Zmeev, Dmitry E., Parpia, Jeevak M., Casey, Andrew, Saunders, John
The symmetry-breaking first-order phase transition between superfluid phases $^3$He-A and $^3$He-B can be triggered extrinsically by ionising radiation or heterogeneous nucleation arising from the details of the sample cell construction. However, the
Externí odkaz:
http://arxiv.org/abs/2401.06079
We prove an analogue of P\'olya's conjecture for the eigenvalues of the magnetic Schr\"odinger operator with Aharonov--Bohm potential on the disk, for Dirichlet and magnetic Neumann boundary conditions. This answers a question posed by R. L. Frank an
Externí odkaz:
http://arxiv.org/abs/2311.14072
Autor:
Autti, S., Casey, A., Eng, N., Darvishi, N., Franchini, P., Haley, R. P., Heikkinen, P. J., Jennings, A., Kemp, A., Leason, E., Levitin, L. V., Monroe, J., March-Russel, J., Noble, M. T., Prance, J. R., Rojas, X., Salmon, T., Saunders, J., Smith, R., Thompson, M. D., Tsepelin, V., West, S. M., Whitehead, L., Zavjalov, V. V., Zmeev, D. E.
Publikováno v:
Eur. Phys. J. C (2024) 84:248
The focus of dark matter searches to date has been on Weakly Interacting Massive Particles (WIMPs) in the GeV/$c^2$-TeV/$c^2$ mass range. The direct, indirect and collider searches in this mass range have been extensive but ultimately unsuccessful, p
Externí odkaz:
http://arxiv.org/abs/2310.11304
Electrical and thermal transport were studied in a vacuum-annealed polycrystalline silver wire with residual resistivity ratio 200-400, in the temperature range 0.1-1.2K and in magnetic fields up to 5T. Both at zero field and at 5T the wire exhibits
Externí odkaz:
http://arxiv.org/abs/2308.12349