Zobrazeno 1 - 10
of 102
pro vyhledávání: '"Reymbaut A"'
Autor:
Reymbaut, A., Critchley, J., Durighel, G., Sprenger, T., Sughrue, M., Bryskhe, K., Topgaard, D.
Publikováno v:
Magn Reson Med. 85, 2815-2827 (2021)
Purpose: To estimate fiber-specific $T_1$ values, i.e. proxies for myelin content, in heterogeneous brain tissue. Methods: A diffusion-$T_1$ correlation experiment was carried out on an in vivo human brain using tensor-valued diffusion encoding and m
Externí odkaz:
http://arxiv.org/abs/2006.07881
Autor:
Reymbaut, A.
Purpose: To facilitate the implementation/validation of signal representations and models using parametric matrix-variate distributions to approximate the diffusion tensor distribution (DTD) $\mathcal{P}(\mathbf{D})$. Theory: We establish practical m
Externí odkaz:
http://arxiv.org/abs/2005.11280
Autor:
Reymbaut, A., Martins, J. P. de Almeida, Tax, C. M. W., Szczepankiewicz, F., Jones, D. K., Topgaard, D.
Characterizing the properties and orientations of sub-voxel fiber populations, although essential to study white-matter architecture, microstructure and connectivity, remains one of the main challenges faced by the MRI microstructure community. While
Externí odkaz:
http://arxiv.org/abs/2004.08626
Autor:
Reymbaut, A., Caron, A. Valcourt, Gilbert, G., Szczepankiewicz, F., Nilsson, M., Warfield, S. K., Descoteaux, M., Scherrer, B.
Publikováno v:
Medical Image Analysis 70, 101988 (2021)
Diffusion tensor imaging provides increased sensitivity to microstructural tissue changes compared to conventional anatomical imaging but also presents limited specificity. To tackle this problem, the DIAMOND model subdivides the voxel content into d
Externí odkaz:
http://arxiv.org/abs/2004.07340
The interaction-driven Mott transition in the half-filled Hubbard model is a first-order phase transition that terminates at a critical point $(T_\mathrm{c},U_\mathrm{c})$ in the temperature-interaction plane $T-U$. A number of crossovers occur along
Externí odkaz:
http://arxiv.org/abs/2004.02302
Autor:
Reymbaut, Alexis, Descoteaux, Maxime
Discovering a new field is not usually an easy process, especially when you choose magnetic resonance imaging (MRI). MRI is one of the few non-invasive medical procedures, if not the only one, that someone can receive in modern day hospitals. Its hig
Externí odkaz:
http://arxiv.org/abs/1908.04177
Pseudogap, van Hove Singularity, Maximum in Entropy and Specific Heat for Hole-Doped Mott Insulators
Autor:
Reymbaut, A., Bergeron, S., Garioud, R., Thénault, M., Charlebois, M., Sémon, P., Tremblay, A. -M. S.
Publikováno v:
Phys. Rev. Research 1, 023015 (2019)
The first indication of a pseudogap in cuprates came from a sudden decrease of NMR Knight shift at a doping-dependent temperature $T^*(\delta)$. Since then, experiments have found phase transitions at a lower $T^*_\text{phase}(\delta)$. Using plaquet
Externí odkaz:
http://arxiv.org/abs/1905.02326
Autor:
Brown, Peter T., Mitra, Debayan, Guardado-Sanchez, Elmer, Nourafkan, Reza, Reymbaut, Alexis, Hébert, Charles-David, Bergeron, Simon, Tremblay, A. -M. S., Kokalj, Jure, Huse, David A., Schauss, Peter, Bakr, Waseem S.
Publikováno v:
Science, 363, 379-382 (2019)
Charge transport is a revealing probe of the quantum properties of materials. Strong interactions can blur charge carriers resulting in a poorly understood "quantum soup". Here we study the conductivity of the Fermi-Hubbard model, a testing ground fo
Externí odkaz:
http://arxiv.org/abs/1802.09456
Publikováno v:
Phys. Rev. B 95, 121104 (2017)
The computation of transport coefficients, even in linear response, is a major challenge for theoretical methods that rely on analytic continuation of correlations functions obtained numerically in Matsubara space. While maximum entropy methods can b
Externí odkaz:
http://arxiv.org/abs/1612.02306
Autor:
Reymbaut, Alexis
Publikováno v:
In Journal of Magnetic Resonance Open December 2021 8-9