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Fluctuating spin density waves in metals
Subir Sachdev, Max A. Metlitski, Yang Qi +1
Recent work has used a U(1) gauge theory to describe the physics of Fermi pockets in the presence of fluctuating spin density wave order. We generalize this theory to an arbitrary…
Competition between spin density wave order and superconductivity in the underdoped cuprates
Eun Gook Moon, Subir Sachdev
We describe the interplay between d-wave superconductivity and spin density wave (SDW) order in a theory of the hole-doped cuprates at hole densities below optimal doping. The theo…
Entanglement Entropy in the O(N) model
Max A. Metlitski, Carlos A. Fuertes, Subir Sachdev
It is generally believed that in spatial dimension d > 1 the leading contribution to the entanglement entropy S = - tr rho_A log rho_A scales as the area of the boundary of subsyst…
Magnetization of the Shastry-Sutherland antiferromagnet near the Ising limit
Fangzhou Liu, Subir Sachdev
Motivated by recent experiments on TmB4 (arXiv:0712.1537), we examine the phase diagram of the Shastry-Sutherland antiferromagnet in an applied magnetic field in the limit of stron…
Global phase diagrams of frustrated quantum antiferromagnets in two dimensions: doubled Chern-Simons theory
Cenke Xu, Subir Sachdev
We present a general approach to understanding the quantum phases and phase transitions of quantum antiferromagnets in two spatial dimensions. We begin with the simplest spin liqui…
Exotic phases and quantum phase transitions: model systems and experiments
Subir Sachdev
I survey theoretical advances in our understanding of the quantum phases and phase transitions of Mott insulators, and of allied conducting systems obtained by doping charge carrie…