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Quantum no-go theorems in causality respecting systems in presence of closed timelike curves: Tweaking the Deutsch condition
Asutosh Kumar, Indranil Chakrabarty, Arun Kumar Pati +2
We consider causality respecting (CR) quantum systems interacting with closed timelike curves (CTCs), within the Deutsch model. We introduce the concepts of popping up and eliminat…
Diverging scaling with converging multisite entanglement in odd and even quantum Heisenberg ladders
Sudipto Singha Roy, Himadri Shekhar Dhar, Debraj Rakshit +2
We investigate finite-size scaling of genuine multisite entanglement in the ground state of quantum spin-1/2 Heisenberg ladders. We obtain the ground states of odd- and even-legged…
Adiabatic freezing of long-range quantum correlations in spin chains
Himadri Shekhar Dhar, Debraj Rakshit, Aditi Sen De +1
We consider a process to create quasi long-range quantum discord between the non-interacting end spins of a quantum spin chain, with the end spins weakly coupled to the bulk of the…