2 citations · 2 across the 2 of their papers we have counts for
3 papers
math-ph2015
A continuous family of equilibria in ferromagnetic media are ground states
Xifeng Su, Rafael de la Llave
We show that a foliation of equilibria (a continuous family of equilibria whose graph covers all the configuration space) in ferromagnetic models are ground states. The result we p…
math-ph2011★ 2 cited
KAM theory for quasi-periodic equilibria in 1-D quasiperiodic media
Xifeng Su, Rafael de la Llave
We consider Frenkel-Kontorova models corresponding to 1 dimensional quasicrystals. We present a KAM theory for quasi-periodic equilibria. The theorem presented has an \emph{a-poste…
math-ph2011
Percival Lagrangian approach to Aubry-Mather theory
Xifeng SU, Rafael de la Llave
We present some streamlined proofs of some of the basic results in Aubry-Mather theory (existence of quasi-periodic minimizers, multiplicity results when there are gaps among minim…