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Consortium of Swiss Academic Libraries

Dimensional estimates for singular sets in geometric variational problems with free boundaries

De Philippis, Guido ; Maggi, Francesco

In: Journal für die reine und angewandte Mathematik (Crelles Journal), 2017, vol. 2017, no. 725, p. 217-234

Consortium of Swiss Academic Libraries

Electronic Structure and Properties of Superconducting Materials with Simple Fermi Surfaces

Jarlborg, T.

In: Journal of Superconductivity and Novel Magnetism, 2015, vol. 28, no. 4, p. 1231-1236

Università della Svizzera italiana

Scalable algorithms for high-dimensional graphical lasso and function approximation

Eftekhari, Aryan ; Schenk, Olaf (Dir.)

Thèse de doctorat : Università della Svizzera italiana, 2021 ; 2021INFO008.

Fundamental tasks in multivariate and numerical analysis, such as sparse precision matrix estimation via graphical lasso and function approximation, are formulated in ever-increasing dimensions. Consequently, this results in a significant increase in the computational demand that quickly renders standard solution methods intractable. With this motivation, we present two scalable algorithms that...

Université de Fribourg

Probing the interplay between lattice dynamics and short-range magnetic correlations in CuGeO3 with femtosecond RIXS

Paris, E. ; Nicholson, Christopher W. ; Johnston, S. ; Tseng, Y. ; Rumo, Maxime ; Coslovich, G. ; Zohar, S. ; Lin, M. F. ; Strocov, V. N. ; Saint-Martin, R. ; Revcolevschi, A. ; Kemper, A. ; Schlotter, W. ; Dakovski, G. L. ; Monney, Claude ; Schmitt, T.

In: npj Quantum Materials, 2021, vol. 6, no. 1, p. 51

Investigations of magnetically ordered phases on the femtosecond timescale have provided significant insights into the influence of charge and lattice degrees of freedom on the magnetic sub-system. However, short-range magnetic correlations occurring in the absence of long-range order, for example in spin-frustrated systems, are inaccessible to many ultrafast techniques. Here, we show how...