3 papers
physics.atom-ph2019
High Harmonic Generation with Twisted Electrons
Sebastian Gemsheim, Jan-Michael Rost
We present analytically and numerically the spectrum of high harmonic emission generated by twisted electrons in the presence of linearly polarized light. Ensuing transitions from…
cond-mat.stat-mech2019
Order parameter dynamics of the non-linear sigma model in the large limit
Sebastian Gemsheim, Ipsita Mandal, Krishnendu Sengupta +1
We study non-equilibrium order parameter dynamics of the non-linear sigma model in the large limit, using Keldysh formalism. We provide a scheme for obtaining stable numerical…
cond-mat.str-el2018
Emergence of topological Mott insulators in proximity of quadratic band touching points
I. Mandal, S. Gemsheim
Recently, the field of strongly correlated electrons has begun an intense search for a correlation induced topological insulating phase. An example is the quadratic band touching p…