Publications related to Snow avalanches striking water basins: behaviour of the avalanche's centre of mass and front.

An Offline-Online Riemann Solver for One-Dimensional Systems of Conservation Laws

In this paper, we present an exact Riemann solver for one-dimensional systems of conservation laws. The method is based on an offline-online computational decomposition. During the offline stage, we generate an accurate surrogate model for the solution to ...

Springer Singapore Pte Ltd2016

Impact of axions on confinement in three and two dimensions

In this paper we discuss well-known three- and two-dimensional models with confinement, namely, the Polyakov compact electrodynamics in 3D and two-dimensional CP(N-1) sigma model, and reveal changes in the confining regimes of these models upon adding the ...

Amer Physical Soc2015

A counterexample to well-posedness of entropy solutions to the compressible Euler system

Elisabetta Chiodaroli

We consider entropy solutions to the Cauchy problem for the isentropic compressible Euler equations in the spatially periodic case. In more than one space dimension, the methods developed by De Lellis-Szekelyhidi enable us to show here failure of uniquenes ...

World Scientific Publ Co Pte Ltd2014

Turbulent regimes in the tokamak scrape-off layer

Paolo Ricci, Joaquim Loizu Cisquella, Sébastien Jolliet, Federico David Halpern, Annamaria Mosetto

We identify the turbulent regimes in the tokamak scrape-off layer as a function of plasma resistivity, electron to ion mass ratio, safety factor, and magnetic shear. We find that two main instabilities drive turbulence in the SOL: Drift Waves, with their r ...

2013

Nondispersive solutions to the $L^2$-critical half-wave equation

Joachim Krieger

We consider the focusing

L^2

-critical half-wave equation in one space dimension

i \partial_t u = D u - |u|^2 u,

where

D

denotes the first-order fractional derivative. Standard arguments show that there is a critical threshold

M_* > 0

such that all ...

Springer Verlag2013

Desorption of alkali atoms from 4He nanodroplets

Marcel Drabbels, Evgeniy Loginov, Marina Langlet

The dynamics following the photoexcitation of Na and Li atoms located on the surface of helium nanodroplets has been investigated in a joint experimental and theoretical study. Photoelectron spectroscopy has revealed that excitation of the alkali atoms via ...

2012

Tomography-based determination of permeability and Dupuit-Forchheimer coefficient of characteristic snow samples

Sophia Haussener, Marc Schneebeli Zeugin, Aldo Steinfeld, Émilie Zermatten

A tomography-based methodology for the mass transport characterization of snow is presented. Five samples, characteristic for a wide range of seasonal snow, are considered. Their three-dimensional (3-D) geometrical representations are obtained by micro-com ...

International Glaciological Society2011

A New Method to Explore Conformal Field Theories in Any Dimension

Alessandro Vichi

The thesis represents an investigation into Conformal Field Theories (CFT's) in arbitrary dimensions. We propose an innovative method to extract informations about CFT's in a quantitative way. Studying the crossing symmetry of the four point function of sc ...

EPFL2011

Algorithms for the coupling of one-dimensional arterial networks with three-dimensional fluid-structure interaction problems

Simone Deparis, Adelmo Cristiano Innocenza Malossi

This work is focused on the development of a geometrical multiscale framework for modeling the human cardiovascular system. This approach is designed to deal with different geometrical and mathematical models at the same time, without any preliminary hypot ...

2011

Stripes in the two-dimensional t-J model with infinite projected entangled-pair states

We simulate the t-J model in two dimensions by means of infinite projected entangled-pair states (iPEPS) generalized to arbitrary unit cells, finding results similar to those previously obtained by the density-matrix renormalization group (DMRG) for wide l ...

2011

Snow avalanches striking water basins: behaviour of the avalanche's centre of mass and front.

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An Offline-Online Riemann Solver for One-Dimensional Systems of Conservation Laws

Impact of axions on confinement in three and two dimensions

A counterexample to well-posedness of entropy solutions to the compressible Euler system

Turbulent regimes in the tokamak scrape-off layer

Nondispersive solutions to the $L^2$-critical half-wave equation

Desorption of alkali atoms from 4He nanodroplets

Tomography-based determination of permeability and Dupuit-Forchheimer coefficient of characteristic snow samples

A New Method to Explore Conformal Field Theories in Any Dimension

Algorithms for the coupling of one-dimensional arterial networks with three-dimensional fluid-structure interaction problems

Stripes in the two-dimensional t-J model with infinite projected entangled-pair states

Turbulent regimes in the tokamak scrape-off layer

Impact of axions on confinement in three and two dimensions

An Offline-Online Riemann Solver for One-Dimensional Systems of Conservation Laws

A counterexample to well-posedness of entropy solutions to the compressible Euler system

Desorption of alkali atoms from 4He nanodroplets

Algorithms for the coupling of one-dimensional arterial networks with three-dimensional fluid-structure interaction problems

A New Method to Explore Conformal Field Theories in Any Dimension

Nondispersive solutions to the $L^2$-critical half-wave equation

Stripes in the two-dimensional t-J model with infinite projected entangled-pair states

Tomography-based determination of permeability and Dupuit-Forchheimer coefficient of characteristic snow samples