Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR2.7k papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR2.4k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR2.3k papers
- Charles UniversityCZ2.3k papers
- Institute for High Energy PhysicsES2.3k papers
- Institut de Recherche sur les Lois Fondamentales de l'UniversFR2.2k papers
- The Ohio State UniversityUS2.1k papers
- Universidad Autónoma de MadridES2.1k papers
- Rutherford Appleton LaboratoryGB2.1k papers
- European Organization for Nuclear ResearchCH2.1k papers
- University of Wisconsin–MadisonUS2.1k papers
- Joint Institute for Nuclear ResearchRU2k papers
15 papers · 2 filters
Mean Field study of the heavy fermion metamagnetic transition
S. Viola Kusminskiy, K. S. D. Beach, A. H. Castro Neto +1
We investigate the evolution of the heavy fermion ground state under application of a strong external magnetic field. We present a richer version of the usual hybridization mean fi…
Scale-renormalized matrix-product states for correlated quantum systems
Anders W. Sandvik
A generalization of matrix product states (MPS) is introduced which is suitable for describing interacting quantum systems in two and three dimensions. These scale-renormalized mat…
Variational quantum Monte Carlo simulations with tensor-network states
A. W. Sandvik, G. Vidal
We show that the formalism of tensor-network states, such as the matrix product states (MPS), can be used as a basis for variational quantum Monte Carlo simulations. Using a stocha…
AC Hopping Magnetotransport Across the Spin Flop Transition in Lightly Doped La_2CuO_4
Oleg P. Sushkov, Valeri N. Kotov
The weak ferromagnetism present in insulating La_{2}CuO_4 at low doping leads to a spin flop transition, and to transverse (interplane) hopping of holes in a strong external magnet…
A quantum topological phase transition at the microscopic level
C. Castelnovo, C. Chamon
We study a quantum phase transition between a phase which is topologically ordered and one which is not. We focus on a spin model, an extension of the toric code, for which we obta…
Irrational vs. rational charge and statistics in two-dimensional quantum systems
Claudio Chamon, Chang-Yu Hou, Roman Jackiw +3
We show that quasiparticle excitations with irrational charge and irrational exchange statistics exist in tight-biding systems described, in the continuum approximation, by the Dir…
The Coulomb impurity problem in graphene
Vitor M. Pereira, Johan Nilsson, A. H. Castro Neto
We address the problem of an unscreened Coulomb charge in graphene, and calculate the local density of states and displaced charge as a function of energy and distance from the imp…
Electronic compressibility of a graphene bilayer
S. Viola Kusminskiy, Johan Nilsson, D. K. Campbell +1
We calculate the electronic compressibility arising from electron-electron interactions for a graphene bilayer within the Hartree-Fock approximation. We show that, due to the chira…
Electron-Electron Interactions in the Vacuum Polarization of Graphene
Valeri N. Kotov, Bruno Uchoa, A. H. Castro Neto
We discuss the effect of electron-electron interactions on the static polarization properties of graphene beyond RPA. Divergent self-energy corrections are naturally absorbed into…
Entanglement and topological entropy of the toric code at finite temperature
C. Castelnovo, C. Chamon
We calculate exactly the von Neumann and topological entropies of the toric code as a function of system size and temperature. We do so for systems with infinite energy scale separ…
Emergence of U(1) symmetry in the 3D XY model with Zq anisotropy
Jie Lou, Anders W. Sandvik, Leon Balents
We study the three-dimensional XY model with a Z_q anisotropic term. At temperatures T < Tc this dangerously irrelevant perturbation is relevant only above a length scale Lambda, w…
Quantum Phase Transition in the Four-Spin Exchange Antiferromagnet
Valeri N. Kotov, Dao-Xin Yao, A. H. Castro Neto +1
We study the S=1/2 Heisenberg antiferromagnet on a square lattice with nearest-neighbor and plaquette four-spin exchanges (introduced by A.W. Sandvik, Phys. Rev. Lett. {\bf 98}, 22…
Comparison between experiment and calculated band structures for DyN and SmN
A. R. H. Preston, S. Granville, D. H. Housden +10
We investigate the electronic band structure of two of the rare-earth nitrides, DyN and SmN. Resistivity measurements imply that both materials have a semiconducting ground state,…
Chiral Gauge Theory for Graphene
R. Jackiw, S. -Y. Pi
We construct a chiral gauge theory to describe fractionalization of fermions in graphene. Thereby we extend a recently proposed model, which relies on vortex formation. Our chiral…
Anomalous Curie response of impurities in quantum-critical spin-1/2 Heisenberg antiferromagnets
K. H. Hoglund, A. W. Sandvik
We consider a magnetic impurity in two different S=1/2 Heisenberg bilayer antiferromagnets at their respective critical inter-layer couplings separating N'eel and disordered ground…