20 citations · 22 across the 4 of their papers we have counts for
4 papers
Equilibrium and dynamical phase transitions in fully connected quantum Ising model: Approximate energy eigenstates and critical time
Arun Sehrawat, Chirag Srivastava, Ujjwal Sen
We study equilibrium as well as dynamical properties of the finite-size fully connected Ising model with a transverse field at the zero temperature. In relation to the equilibrium,…
Allowed region of the mean values of angular momentum observables and their uncertainty relations
Arun Sehrawat
The expectation values of operators drawn from a single quantum state cannot be outside of a particular region, called their allowed region or the joint numerical range of the oper…
Deriving quantum constraints and tight uncertainty relations
Arun Sehrawat
We present a systematic procedure to obtain all necessary and sufficient (quantum) constraints on the expectation values for any set of qudit's operators. These constraints---arise…
A combined-probability space and (un)certainty relations for a finite-level quantum system
Arun Sehrawat
The Born rule provides a probability vector (distribution) with a quantum state for a measurement setting. For two settings, we have a pair of vectors from the same quantum state.…