Publications (8)
T-matrix formulation of real-space dynamical mean-field theory and the Friedel sum rule for correlated lattice fermions
K. Byczuk, B. Chatterjee, D. Vollhardt
We formulate real-space dynamical mean-field theory within scattering theory. Thereby the Friedel sum rule is derived for interacting lattice fermions at zero temperature.
Quench dynamics of 1D Bose gas in an optical lattice: does the system relax?
S. Bera, R Roy, A. Gammal +2
Understanding the relaxation process is the most important unsolved problem in non-equilibrium quantum physics. Current understanding primarily concerns on if and how an isolated q…
Entropy Signatures of Collective Modes and Vortex Dynamics in Rotating Two--Dimensional Bose--Einstein Condensates
L. A. Machado, N. D. Chavda, B. Chatterjee +4
We investigate the nonequilibrium dynamics of a two-dimensional rotating Bose gas confined in a symmetric anharmonic trap, employing the multiconfigurational time-dependent Hartree…
Real-space dynamical mean-field theory of Friedel oscillations in strongly correlated electron systems
B. Chatterjee, J. Skolimowski, K. Makuch +1
We study Friedel oscillations and screening effects of the impurity potential in the Hubbard model. Electronic correlations are accounted for by solving the real-space dynamical me…
Interaction Quench Dynamics and Stability of Quantum Vortices in Rotating Bose-Einstein Condensates
L. A. Machado, B. Chatterjee, M. A. Caracanhas +3
We theoretically investigate the non-equilibrium dynamics of quantum vortices in a two-dimensional rotating Bose-Einstein condensate following an interaction quench. Using an ab in…
Lattice vibrational modes in changchengite from Raman spectroscopy and first principles electronic structure
B. Chatterjee, D. Vengust, A. Mrzel +4
We measured room-temperature phonon Raman spectra of changchengite (IrBiS) and compared the experimental phonon wavenumbers to the theoretical ones obtained by means of the \emph{a…