205 citations · 3k across the 122 of their papers we have counts for
6 papers · 1 filter
Qubism: self-similar visualization of many-body wavefunctions
Javier Rodriguez-Laguna, Piotr Migdał, Miguel Ibáñez Berganza +2
A visualization scheme for quantum many-body wavefunctions is described, which we have termed qubism. Its main property is its recursivity: increasing the number of qubits reflects…
General covariant xp models and the Riemann zeros
German Sierra
We study a general class of models whose classical Hamiltonians are given by H = U(x) p + V(x)/p, where x and p are the position and momentum of a particle moving in one dimension,…
Quantum spin Hamiltonians for the SU(2)_k WZW model
Anne E. B. Nielsen, J. Ignacio Cirac, German Sierra
We propose to use null vectors in conformal field theories to derive model Hamiltonians of quantum spin chains and corresponding ground state wave function(s). The approach is quit…
Violation of the area law and long range correlations in infinite matrix product states
Anne E. B. Nielsen, German Sierra, J. Ignacio Cirac
We propose to construct a family of states of one-dimensional spin chains by replacing the finite dimensional matrices in matrix product states by infinite dimensional operators co…
The H=xp model revisited and the Riemann zeros
German Sierra, Javier Rodriguez-Laguna
Berry and Keating conjectured that the classical Hamiltonian H = xp is related to the Riemann zeros. A regularization of this model yields semiclassical energies that behave, in av…
Entanglement of low-energy excitations in Conformal Field Theory
Francisco Castilho Alcaraz, Miguel Ibanez Berganza, German Sierra
In a quantum critical chain, the scaling regime of the energy and momentum of the ground state and low lying excitations are described by conformal field theory (CFT). The same hol…