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Response of entanglement to annealed vis-à-vis quenched disorder in quantum spin models
Anindita Bera, Debasis Sadhukhan, Debraj Rakshit +2
We investigate bipartite entanglement in random quantum models at equilibrium. Depending on the intrinsic time scales associated with equilibration of the random parameters an…
Fibonacci sequence and its generalizations in doped quantum spin ladders
Sudipto Singha Roy, Himadri Shekhar Dhar, Aditi Sen De +1
An interesting aspect of antiferromagnetic quantum spin ladders, with complete dimer coverings, is that the wave function can be recursively generated by estimating the number of c…
Adiabatic freezing of entanglement with insertion of defects in a one-dimensional Hubbard model
Sreetama Das, Sudipto Singha Roy, Himadri Shekhar Dhar +3
We report on ground state phases of a doped one-dimensional Hubbard model, which for large onsite interactions is governed by the - Hamiltonian, where the extant entanglement…
Universal quantum uncertainty relations: minimum-uncertainty wave packet depends on measure of spread
Anindita Bera, Debmalya Das, Aditi Sen De +1
Based on the statistical concept of the median, we propose a quantum uncertainty relation between semi-interquartile ranges of the position and momentum distributions of arbitrary…