78 citations · 214 across the 12 of their papers we have counts for
12 papers
Randomized low-rank approximation of monotone matrix functions
David Persson, Daniel Kressner
This work is concerned with computing low-rank approximations of a matrix function for a large symmetric positive semi-definite matrix , a task that arises in, e.g., stat…
Improved variants of the Hutch++ algorithm for trace estimation
David Persson, Alice Cortinovis, Daniel Kressner
This paper is concerned with two improved variants of the Hutch++ algorithm for estimating the trace of a square matrix, implicitly given through matrix-vector products. Hutch++ co…
Massive Type IIA Supergravity and E10
Marc Henneaux, Ella Jamsin, Axel Kleinschmidt +1
In this talk we investigate the symmetry under E10 of Romans' massive type IIA supergravity. We show that the dynamics of a spinning particle in a non-linear sigma model on the cos…
Stabilization of Chromomagnetic Fields at High Temperature?
David Persson
It is well known that a tachyonic mode appears in the spectrum of Yang--Mills theory with a static uniform magnetic field, and that the free energy has an (unstable) minimum at fin…
Stability of large scale chromomagnetic fields in the early universe
Per Elmfors, David Persson
It is well known that Yang-Mills theory in vacuum has a perturbative instability to spontaneously form a large scale magnetic field (the Savvidy mechanism) and that a constant fiel…
Thermal Phase Transition in Weakly Interacting Large N_C QCD
Joakim Hallin, David Persson
We consider thermal QCD in the large N_C limit, mainly in 1+1 dimensions. The gauge coupling is only taken into account to minimal order, by projection onto colour singlets. An exp…