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Matthias Ruf

  Matthias Ruf, PhD

  I moved to the École polytechnique fédérale de Lausanne.

  eMail: matthias.ruf@ulb.ac.be

Scientific interests

  1. Calculus of variations and applications
  2. Asymptotic analysis of multi-scale problems
  3. Discrete-to-continuum limits
  4. Stochastic homogenization

Short CV

  1. 2019 - now     Instructor at EPFL
  2. 2017 - 2019    Post-doc at ULB  (in the group of Prof. A. Gloria)
  3. 2013 - 2017    PhD student at TU Munich  (advisor: Prof. M. Cicalese)
    Thesis: Discrete-to-continuum limits and stochastic homogenization of ferromagnetic surface energies  (PDF)
  4. 2008 - 2013    Undergraduate student (mathematics) at TU Munich


  1. From the N-clock model to the XY-model: emergence of concentration effects in the variational analysis (with M. Cicalese and G. Orlando) (2019) [preprint]
  2. Random finite-difference discretizations of the Ambrosio-Tortorelli functional with optimal mesh size (with A. Bach and M. Cicalese) (2019) [preprint]
  3. From statistical polymer physics to nonlinear elasticity (with M. Cicalese and A. Gloria) (2018) [preprint]
  4. Loss of strong ellipticity through homogenization in 2D linear elasticity: a phase diagram (with A. Gloria), Arch. Ration. Mech. Anal. , 231 (2019), no. 2, 845-886 [preprint] [article]
  5. Discrete stochastic approximations of the Mumford-Shah functional, Ann. Inst. H. Poincaré Anal. Non Linéaire (2018), online first [preprint] [article]
  6. Motion of discrete interfaces in low-contrast random environments, ESAIM: Control Optim. Calc. Var. 24 (2018), no.3, 1275-1301 [preprint] [article]
  7. Hemihelical local minimizers in prestrained elastic bi-strips (with M. Cicalese and F. Solombrino), Z. Angew. Math. Phys. (2017), 68:122 [preprint] [article]
  8. Continuum limit and stochastic homogenization of discrete ferromagnetic thin films (with A. Braides and M. Cicalese), Anal. PDE 11 (2018), no.2, 499-553 [preprint] [article]
  9. On the continuity of functionals defined on partitions, Adv. Calc. Var. 11 (2017), no. 11, 335-339 [preprint] [article]
  10. On global and local minimizers of prestrained thin elastic rods (with M. Cicalese and F. Solombrino), Calc. Var. PDE (2017), 56:115 [preprint] [article]
  11. Discrete spin systems on random lattices at the bulk scaling (with M. Cicalese), Disc. Cont. Dyn. Sys.-S, 10 (2017), no. 1, 101-117 [preprint] [article]
  12. Chirality transitions in frustrated S2-valued spin systems (with M. Cicalese and F. Solombrino), Math. Models Methods Appl. Sci., 26 (2016), no. 8, 1481-1529 [preprint] [article]
  13. Domain formation in magnetic polymer composites: an approach via stochastic homogenization (with R. Alicandro and M. Cicalese), Arch. Ration. Mech. Anal., 218 (2015), no. 2, 945-984 [preprint] [article]

Last update: 03.09.2019