125 citations · 303 across the 6 of their papers we have counts for
6 papers
Universal and measurable entanglement entropy in the spin-boson model
Angela Kopp, Karyn Le Hur
We study the entanglement between a qubit and its environment from the spin-boson model with Ohmic dissipation. Through a mapping to the anisotropic Kondo model, we derive the entr…
Competing ferromagnetism in high temperature copper oxide superconductors
Angela Kopp, Amit Ghosal, Sudip Chakravarty
The extreme variability of observables across the phase diagram of the cuprate high temperature superconductors has remained a profound mystery, with no convincing explanation of t…
Replacing energy by von Neumann entropy in quantum phase transitions
Angela Kopp, Xun Jia, Sudip Chakravarty
In the thermodynamic limit two distinct states of matter cannot be analytic continuations of each other. Classical phase transitions are characterized by non-analyticities of the f…
Universality of transition temperatures in families of copper-oxide superconductors: interlayer tunneling redux
Angela Kopp, Sudip Chakravarty
We revisit the interlayer tunneling theory of high temperature superconductors and formulate it as a mechanism by which the striking systematics of the transition temperature withi…
Criticality in correlated quantum matter
Angela Kopp, Sudip Chakravarty
At quantum critical points (QCP) \cite{Pfeuty:1971,Young:1975,Hertz:1976,Chakravarty:1989,Millis:1993,Chubukov:1 994,Coleman:2005} there are quantum fluctuations on all length scal…
Modulation of the local density of states within the -density wave theory in the underdoped cuprates
Amit Ghosal, Angela Kopp, Sudip Chakravarty
The low temperature scanning tunneling microscopy spectra in the underdoped regime is analyzed from the perspective of coexisting -density wave and d-wave superconducting states…