305 citations · 976 across the 13 of their papers we have counts for
13 papers
Expansion of a matter wave packet in a one-dimensional disordered potential in the presence of a uniform bias force
C Crosnier de Bellaistre, C Trefzger, A. Aspect +2
We study numerically the expansion dynamics of an initially confined quantum wave packet in the presence of a disordered potential and a uniform bias force. For white-noise disorde…
The self-energy of an impurity in an ideal Fermi gas to second order in the interaction strength
Christian Trefzger, Yvan Castin
We study in three dimensions the problem of a spatially homogeneous zero-temperature ideal Fermi gas of spin-polarized particles of mass perturbed by the presence of a single d…
Energy, decay rate, and effective masses for a moving polaron in a Fermi sea: Explicit results in the weakly attractive limit
Christian Trefzger, Yvan Castin
We study the properties of an impurity of mass moving through a spatially homogeneous three-dimensional fully polarized Fermi gas of particles of mass . In the weakly attrac…
Polaron residue and spatial structure in a Fermi gas
Christian Trefzger, Yvan Castin
We study the problem of a mobile impurity of mass interacting {\sl via} a s-wave broad or narrow Feshbach resonance with a Fermi sea of particles of mass . Truncating the Hi…
An impurity in a Fermi sea on a narrow Feshbach resonance: A variational study of the polaronic and dimeronic branches
Christian Trefzger, Yvan Castin
We study the problem of a single impurity of mass immersed in a Fermi sea of particles of mass . The impurity and the fermions interact through a s-wave narrow Feshbach reso…
A projection operator approach to the Bose-Hubbard model
Anirban Dutta, C. Trefzger, K. Sengupta
We develop a projection operator formalism for studying both the zero temperature equilibrium phase diagram and the non-equilibrium dynamics of the Bose-Hubbard model. Our work, wh…