141 citations · 754 across the 15 of their papers we have counts for
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Tuning the presence of dynamical phase transitions in a generalized spin chain
Uma Divakaran, Shraddha Sharma, Amit Dutta
We study an integrable spin chain with three spin interactions and the staggered field () while the latter is quenched either slowly (in a linear fashion in time () as …
Slow quenches in a quantum Ising chain; dynamical phase transitions and topology
Shraddha Sharma, Uma Divakaran, Anatoli Polkovnikov +1
We study the slow quenching dynamics (characterized by an inverse rate, ) of a one-dimensional transverse Ising chain with nearest neighbor ferromagentic interactions acros…
Quenches and dynamical phase transitions in a non-integrable quantum Ising model
Shraddha Sharma, Sei Suzuki, Amit Dutta
We study quenching dynamics of a one-dimensional transverse Ising chain with nearest neighbor antiferromagentic interactions in the presence of a longitudinal field which renders t…
One and two-dimensional quantum models: quenches and the scaling of irreversible entropy
Shraddha Sharma, Amit Dutta
Using the scaling relation of the ground state quantum fidelity, we propose the most generic scaling relations of the irreversible work (the residual energy) of a closed quantum sy…
Study of Loschmidt Echo for two-dimensional Kitaev model
Shraddha Sharma, Atanu Rajak
In this paper, we study the Loschmidt Echo (LE) of a two-dimensional Kitaev model residing on a honeycomb lattice which is chosen to be an environment that is coupled globally to a…
Loschmidt echo with a non-equilibrium initial state: early time scaling and enhanced decoherence
Victor Mukherjee, Shraddha Sharma, Amit Dutta
We study the Loschmidt echo (LE) in a central spin model in which a central spin is globally coupled to an environment (E) which is subjected to a small and sudden quench at …
Study of Loschmidt Echo for a qubit coupled to an XY-spin chain environment
Shraddha Sharma, Victor Mukherjee, Amit Dutta
We study the temporal evolution of a central spin-1/2 (qubit) coupled to the environment which is chosen to be a spin-1/2 transverse XY spin chain. We explore the entire phase diag…