G. Ortiz

activity

19992008

most citedOptimal Quantum Measurements of Expectation Values of Observables

206 citations · 510 across the 10 of their papers we have counts for

collaborators

Showing 2008Show all

2 papers · 1 filter

cond-mat.str-el2008★ 99 cited

Hierarchical mean-field approach to the $J_{1}$ - $J_{2}$ Heisenberg model on a square lattice

L. Isaev, G. Ortiz, J. Dukelsky

We study the quantum phase diagram and excitation spectrum of the frustrated $J_{1}$ - $J_{2}$ spin-1/2 Heisenberg Hamiltonian. A hierarchical mean-field approach, at the heart of which…

cond-mat.other2008

The Cooper pair from radio-frequency excitations in ultracold gases

J. Dukelsky, G. Ortiz

We discuss the concept of Cooper pair in the context of recent experimental studies of radio-frequency excitations in ultracold atomic gases. We argue that the threshold energy det…

Hierarchical mean-field approach to the J1​-J2​ Heisenberg model on a square lattice

The Cooper pair from radio-frequency excitations in ultracold gases

Hierarchical mean-field approach to the $J_{1}$ - $J_{2}$ Heisenberg model on a square lattice