237 citations · 1.5k across the 38 of their papers we have counts for
6 papers · 1 filter
Disorder-Induced Superfluidity in Hardcore Bosons in Two Dimensions
Ji-Woo Lee, Shailesh Chandrasekharan, Harold U. Baranger
We study the effect of disorder on hardcore bosons in two dimensions at the SU(2) symmetric ``Heisenberg point''. We obtain our results with quantum Monte Carlo simulations using t…
The Role of the Exchange-Correlation Potential in ab initio Electron Transport Calculations
San-Huang Ke, Harold U. Baranger, Weitao Yang
The effect of the exchange-correlation potential in ab initio electron transport calculations is investigated by constructing optimized effective potentials (OEP) using different e…
Resilient Quantum Computation in Correlated Environments: A Quantum Phase Transition Perspective
E. Novais, Eduardo R. Mucciolo, Harold U. Baranger
We analyze the problem of a quantum computer in a correlated environment protected from decoherence by QEC using a perturbative renormalization group approach. The scaling equation…
Quantum Phase Transitions of Hard-Core Bosons in Background Potentials
Anand Priyadarshee, Shailesh Chandrasekharan, Ji-Woo Lee +1
We study the zero temperature phase diagram of hard core bosons in two dimensions subjected to three types of background potentials: staggered, uniform, and random. In all three ca…
Spectroscopy of the Kondo Problem in a Box
Ribhu K. Kaul, Gergely Zaránd, Shailesh Chandrasekharan +2
Motivated by experiments on double quantum dots, we study the problem of a single magnetic impurity confined in a finite metallic host. We prove an exact theorem for the ground sta…
Correlation Induced Inhomogeneity in Circular Quantum Dots
Amit Ghosal, A. D. Guclu, C. J. Umrigar +2
Properties of the "electron gas" - in which conduction electrons interact by means of Coulomb forces but ionic potentials are neglected - change dramatically depending on the balan…