66 citations · 164 across the 6 of their papers we have counts for
6 papers
Projective approach to the entanglement entropy of 1- fermions
G. C. Levine, B. A. Friedman
The entanglement entropy of two gapless non-interacting fermion subsystems is computed approximately in a way that avoids the introduction of replicas and a geometric interpretatio…
Entanglement entropy in a boundary impurity model
Gregory Levine
Boundary impurities are known to dramatically alter certain bulk properties of 1+1 dimensional strongly correlated systems. The entanglement entropy of a zero temperature Luttinger…
Entanglement of a qubit with a single oscillator mode
G. C. Levine, V. N. Muthukumar
We solve a model of a qubit strongly coupled to a massive environmental oscillator mode where the qubit backaction is treated exactly. Using a Ginzburg-Landau formalism, we derive…
Spinons in a Crossed-Chains Model of a 2D Spin Liquid
Oleg A. Starykh, Rajiv R. P. Singh, Gregory C. Levine
Using Random Phase Approximation, we show that a crossed-chains model of a spin-1/2 Heisenberg spins, with frustrated interchain couplings, has a non-dimerized spin-liquid ground s…
Localization transition in the Mermin model
Gregory Levine, V. N. Muthukumar
We study the dynamical properties of the Mermin model, a simple quantum dissipative model with a monochromatic environment, using analytical and numerical methods. Our numerical re…
Linear and nonlinear susceptibilities of a decoherent two-level system
Gregory Levine
The linear and nonlinear dynamical susceptibilities of a two level system are calculated as it undergoes a transition to a decoherent state. Analogously to the Glover-Tinkham-Ferre…