Zobrazeno 1 - 10
of 3 921
pro vyhledávání: '"Roberts, P. W."'
Autor:
Roberts, Bryan W
Publikováno v:
Cambridge: Cambridge University Press (2022)
The arrow of time refers to the curious asymmetry that distinguishes the future from the past. Reversing the Arrow of Time argues that there is an intimate link between the symmetries of 'time itself' and time reversal symmetry in physical theories,
Externí odkaz:
http://arxiv.org/abs/2212.03489
Autor:
Lotz, S., Nel, A. E., Wicks, R. T., Roberts, O. W., Engelbrecht, N. E., Strauss, R. D., Botha, G. J. J., Kontar, E. P., Pitna, A., Bale, S. D.
In this study we examine the radial dependence of the inertial and dissipation range indices, as well as the spectral break separating the inertial and dissipation range in power density spectra of interplanetary magnetic field fluctuations using {\i
Externí odkaz:
http://arxiv.org/abs/2212.02441
Autor:
Grach, Veronika S., Artemyev, Anton V., Demekhov, Andrei G., Zhang, Xiao-Jia, Bortnik, Jacob, Angelopoulos, Vassilis, Nakamura, R., Tsai, E., Wilkins, C., Roberts, O. W.
Relativistic electron losses in Earth's radiation belts are usually attributed to electron resonant scattering by electromagnetic waves. One of the most important wave mode for such scattering is the electromagnetic ion cyclotron (EMIC) mode. Within
Externí odkaz:
http://arxiv.org/abs/2205.00515
Autor:
Vörös, Zoltán, Varsani, Ali, Yordanova, Emiliya, Sasunov, Yury L., Roberts, Owen W., Kis, Arpád, Nakamura, Rumi, Narita, Yasuhito
The twisted local magnetic field at the front or rear regions of the magnetic clouds (MCs) associated with interplanetary coronal mass ejections (ICMEs) is often nearly opposite to the direction of the ambient interplanetary magnetic field (IMF). The
Externí odkaz:
http://arxiv.org/abs/2108.09049
Why is gauge symmetry so important in modern physics, given that one must eliminate it when interpreting what the theory represents? In this paper we discuss the sense in which gauge symmetry can be fruitfully applied to constrain the space of possib
Externí odkaz:
http://arxiv.org/abs/2105.11154
Autor:
Roberts, O. W., Nakamura, R., Torkar, K., Graham, D. B., Gershman, D. J., Holmes, J. C., Varsani, A., Escoubet, C. P., Vörös, Z., Wellenzohn, S., Khotyaintsev, Y., Ergun, R. E., Giles, B. L.
Publikováno v:
Journal of Geophysical Research: Space Physics, 125, e2020JA027854
Spacecraft potential has often been used to infer electron density with much higher time resolution than is typically possible with plasma instruments. However, recently two studies by Torkar et al. 2017 and Graham et al. 2018 have shown that externa
Externí odkaz:
http://arxiv.org/abs/2009.03079
Autor:
Roberts, Bryan W., Butterfield, Jeremy
In this contribution in honour of Paul Busch, we criticise the claims of many expositions that the time-energy uncertainty principle allows both a violation of energy conservation, and particle creation, provided that this happens for a sufficiently
Externí odkaz:
http://arxiv.org/abs/2007.03030
Autor:
Barthel, A., Roberts, J. W., Napari, M., Huq, T. N., Kovács, A., Oliver, R. A., Chalker, P. R., Sajavaara, T., Massabuau, F. C-P.
The suitability of Ti as a band gap modifier for $\alpha$-Ga$_2$O$_3$ was investigated, taking advantage of the isostructural {\alpha}-phases and high band gap difference between Ti$_2$O$_3$ and Ga$_2$O$_3$. Films of Ti:Ga$_2$O$_3$, with a range of T
Externí odkaz:
http://arxiv.org/abs/2006.01422
Autor:
Swallow, Jack E. N., Vorwerk, Christian, Mazzolini, Piero, Vogt, Patrick, Bierwagen, Oliver, Karg, Alexander, Eickhoff, Martin, Schörmann, Jörg, Wagner, Markus R., Roberts, Joseph W., Chalker, Paul R., Smiles, Matthew J., Murgatroyd, Philip A. E., Razek, Sara A., Lebens-Higgins, Zachary W., Piper, Louis F. J., Jones, Leanne A. H., Thakur, Pardeep Kumar, Lee, Tien-Lin, Varley, Joel B., Furthmüller, Jürgen, Draxl, Claudia, Veal, Tim D., Regoutz, Anna
Publikováno v:
Chemistry of Materials 32, 8460 2020
The search for new wide band gap materials is intensifying to satisfy the need for more advanced and energy efficient power electronic devices. Ga$_2$O$_3$ has emerged as an alternative to SiC and GaN, sparking a renewed interest in its fundamental p
Externí odkaz:
http://arxiv.org/abs/2005.13395
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