Satyaki Kar

Tuning towards dynamic freezing using a two-rate protocol

We study periodically driven closed quantum systems where two parameters of the system Hamiltonian are driven with frequencies

Finite-temperature spectral function of a hole in a quantum antiferromagnet and the role of phonons

\omega_1

Study of supersolidity in the two-dimensional Hubbard–Holstein model

and

Quasi-2D J1–J2 antiferromagnet Zn2VO(PO4)2 and its Ti-substituted derivative: A spin-wave analysis

\omega_2=r \omega_1

Andreev tunneling and Josephson current in light irradiated graphene

. We show that such drives may be used to tune towards dynamics induced freezing where the wavefunction of the state of the system after a drive cycle at time

Magnons in a two-dimensional transverse-field XXZ model

T= 2\pi/\omega_1

Magnon dispersion and single hole motion in 2D frustrated antiferromagnets with four-sublattice structures

has almost perfect overlap with the initial state. We locate regions in the

Hole spectral functions in lightly doped quantum antiferromagnets

(\omega_1 ,r)

Tuning of magnetic ground state of the spin-12square-lattice compound Zn2VO(PO4)2through chemical substitution

plane where the freezing is near exact for a class of integrable and a specific non-integrable model. The integrable models that we study encompass Ising and XY models in

Checkerboard-supersolidity in a two-dimensional Bose–Holstein model

d=1